commonLabels need to be immutable to support upgrading.

* Fix kubeflow#1131

* kustomize commonLabels get subsituted into selector fields. Selector fields
  are immutable. So if commonLabels change (e.g. between versions) then
  we can't reapply/update the existing resources which breaks upgrades
 (kubeflow/kfctl#304)

* For the most part the problematic commonLabels were on our Application
  resources. The following labels were being set

  "app.kubernetes.io/version"
  "app.kubernetes.io/instance"
  "app.kubernetes.io/managed-by"
  "app.kubernetes.io/part-of"

* Version was definetely changing between versions. instance was also changing
  between versions to include the version number.

* managed-by and part-of could also change (e.g. we may not be using kfctl)
* We could still set these labels if we wanted to; we just shouldn't set
  them as commonLabels and/or include them in the selector as the will
  inhibit upgrades with kubectl apply.

* I created a test validate_resources_test.go to ensure none of these
  labels are included in commonLabels

* I created a simple go binary tools/fix_common_labels.go to update
  all the resources.

* generat_tests.py - Delete the code to remove unmatched tests.
  * We no longer generate tests that way and the delete code was going
    to delete valid tests like our new validation test

* Get rid of the clean rule in the Makefile for the same reason.

admission-webhook/bootstrap/overlays/application/kustomization.yaml

@@ -1,13 +1,9 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
-kind: Kustomization
 bases:
 - ../../base
-resources:
-- application.yaml
 commonLabels:
-  app.kubernetes.io/name: bootstrap
-  app.kubernetes.io/instance: bootstrap-v0.7.0
-  app.kubernetes.io/managed-by: kfctl
   app.kubernetes.io/component: bootstrap
-  app.kubernetes.io/part-of: kubeflow
-  app.kubernetes.io/version: v0.7.0
+  app.kubernetes.io/name: bootstrap
+kind: Kustomization
+resources:
+- application.yaml

admission-webhook/webhook/overlays/application/kustomization.yaml

@@ -1,13 +1,9 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
-kind: Kustomization
 bases:
 - ../../base
-resources:
-- application.yaml
 commonLabels:
-  app.kubernetes.io/name: webhook
-  app.kubernetes.io/instance: webhook-v0.7.0
-  app.kubernetes.io/managed-by: kfctl
   app.kubernetes.io/component: webhook
-  app.kubernetes.io/part-of: kubeflow
-  app.kubernetes.io/version: v0.7.0
+  app.kubernetes.io/name: webhook
+kind: Kustomization
+resources:
+- application.yaml

admission-webhook/webhook/v3/kustomization.yaml

@@ -1,16 +1,8 @@
-# TODO(https://github.com/kubeflow/manifests/issues/1052): Refactor
-# and cleanup the kustomization once the v3 migration is done.
 apiVersion: kustomize.config.k8s.io/v1beta1
+commonLabels:
+  app.kubernetes.io/component: poddefaults
+  app.kubernetes.io/name: poddefaults
 kind: Kustomization
 resources:
-# With v3 we want to always use cert-manager to get the
-# self-signed certificate
 - ../overlays/cert-manager/
 - ../overlays/application/application.yaml
-commonLabels:
-  app.kubernetes.io/name: poddefaults
-  app.kubernetes.io/instance: poddefaults-v0.7.0
-  app.kubernetes.io/managed-by: kfctl
-  app.kubernetes.io/component: poddefaults
-  app.kubernetes.io/part-of: kubeflow
-  app.kubernetes.io/version: v0.7.0

application/application/overlays/application/kustomization.yaml

@@ -1,13 +1,9 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
-kind: Kustomization
 bases:
 - ../../base
-resources:
-- application.yaml
 commonLabels:
-  app.kubernetes.io/name: kubeflow
-  app.kubernetes.io/instance: kubeflow-v0.7.0
-  app.kubernetes.io/managed-by: kfctl
   app.kubernetes.io/component: kubeflow
-  app.kubernetes.io/part-of: kubeflow
-  app.kubernetes.io/version: v0.7.0
+  app.kubernetes.io/name: kubeflow
+kind: Kustomization
+resources:
+- application.yaml

argo/overlays/application/kustomization.yaml

@@ -1,13 +1,9 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
-kind: Kustomization
 bases:
 - ../../base
-resources:
-- application.yaml
 commonLabels:
-  app.kubernetes.io/name: argo
-  app.kubernetes.io/instance: argo-v2.3.0
-  app.kubernetes.io/managed-by: kfctl
   app.kubernetes.io/component: argo
-  app.kubernetes.io/part-of: kubeflow
-  app.kubernetes.io/version: v2.3.0
+  app.kubernetes.io/name: argo
+kind: Kustomization
+resources:
+- application.yaml

aws/aws-alb-ingress-controller/overlays/application/kustomization.yaml

@@ -1,13 +1,8 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
+commonLabels:
+  app.kubernetes.io/component: aws-alb-ingress-controller
+  app.kubernetes.io/name: aws-alb-ingress-controller
 kind: Kustomization
 resources:
 - ../../base
 - application.yaml
-commonLabels:
-  app.kubernetes.io/name: aws-alb-ingress-controller
-  app.kubernetes.io/instance: aws-alb-ingress-controller-v0.7.0
-  app.kubernetes.io/managed-by: kfctl
-  app.kubernetes.io/component: aws-alb-ingress-controller
-  app.kubernetes.io/part-of: kubeflow
-  app.kubernetes.io/version: v0.7.0
-

aws/aws-istio-authz-adaptor/overlays/application/kustomization.yaml

@@ -1,13 +1,9 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
-kind: Kustomization
 bases:
 - ../../base
-resources:
-- application.yaml
 commonLabels:
-  app.kubernetes.io/name: aws-istio-authz-adaptor
-  app.kubernetes.io/instance: aws-istio-authz-adaptor-0.1
-  app.kubernetes.io/managed-by: kfctl
   app.kubernetes.io/component: aws-istio-authz-adaptor
-  app.kubernetes.io/part-of: kubeflow
-  app.kubernetes.io/version: "0.1"
+  app.kubernetes.io/name: aws-istio-authz-adaptor
+kind: Kustomization
+resources:
+- application.yaml

aws/nvidia-device-plugin/overlays/application/kustomization.yaml

@@ -1,13 +1,9 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
-kind: Kustomization
 bases:
 - ../../base
-resources:
-- application.yaml
 commonLabels:
-  app.kubernetes.io/name: nvidia-device-plugin
-  app.kubernetes.io/instance: nvidia-device-plugin-1.0.0-beta
-  app.kubernetes.io/managed-by: kfctl
   app.kubernetes.io/component: nvidia-device-plugin
-  app.kubernetes.io/part-of: kubeflow
-  app.kubernetes.io/version: v1.0.0-beta
+  app.kubernetes.io/name: nvidia-device-plugin
+kind: Kustomization
+resources:
+- application.yaml

cert-manager/cert-manager/overlays/application/kustomization.yaml

@@ -1,15 +1,11 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
-kind: Kustomization
 bases:
 - ../../base
-resources:
-- application.yaml
-configurations:
-- params.yaml
 commonLabels:
-  app.kubernetes.io/name: cert-manager
-  app.kubernetes.io/instance: cert-manager
-  app.kubernetes.io/managed-by: kfctl
   app.kubernetes.io/component: cert-manager
-  app.kubernetes.io/part-of: kubeflow
-
+  app.kubernetes.io/name: cert-manager
+configurations:
+- params.yaml
+kind: Kustomization
+resources:
+- application.yaml

cert-manager/cert-manager/v3/kustomization.yaml

@@ -1,13 +1,8 @@
-# TODO(https://github.com/kubeflow/manifests/issues/1052) clean up the manifests
-# after the refactor is done.
 apiVersion: kustomize.config.k8s.io/v1beta1
-kind: Kustomization
-namespace: cert-manager
 commonLabels:
-  app.kubernetes.io/name: cert-manager
-  app.kubernetes.io/instance: cert-manager
-  app.kubernetes.io/managed-by: kfctl
   app.kubernetes.io/component: cert-manager
-  app.kubernetes.io/part-of: kubeflow  
+  app.kubernetes.io/name: cert-manager
+kind: Kustomization
+namespace: cert-manager
 resources:
 - ../overlays/application/application.yaml

common/centraldashboard/overlays/application/kustomization.yaml

@@ -1,11 +1,7 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
+commonLabels:
+  app.kubernetes.io/component: centraldashboard
+  app.kubernetes.io/name: centraldashboard
 kind: Kustomization
 resources:
 - application.yaml
-commonLabels:
-  app.kubernetes.io/name: centraldashboard
-  app.kubernetes.io/instance: centraldashboard-v0.7.0
-  app.kubernetes.io/managed-by: kfctl
-  app.kubernetes.io/component: centraldashboard
-  app.kubernetes.io/part-of: kubeflow
-  app.kubernetes.io/version: v0.7.0

common/centraldashboard/overlays/stacks/kustomization.yaml

@@ -1,22 +1,12 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
 commonLabels:
   app.kubernetes.io/component: centraldashboard
-  app.kubernetes.io/instance: centraldashboard-v1.0.0
-  app.kubernetes.io/managed-by: kfctl
   app.kubernetes.io/name: centraldashboard
-  app.kubernetes.io/part-of: kubeflow
-  app.kubernetes.io/version: v1.0.0
 kind: Kustomization
 namespace: kubeflow
+patchesStrategicMerge:
+- deployment_kf_config.yaml
 resources:
 - ../../base_v3
-# TODO(jlewi): istio and application are really patches
-# not "overlays" in that they are expected to be used as mixins.
-# Perhaps move this into mixins to make this more obvious.
 - ../../overlays/istio
 - ../../overlays/application
-patchesStrategicMerge:
-# Pull in the patch which will configure central dashboard using a kubeflow
-# configmap
-- deployment_kf_config.yaml
-

common/spartakus/overlays/application/kustomization.yaml

@@ -1,13 +1,9 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
-kind: Kustomization
 bases:
 - ../../base
-resources:
-- application.yaml
 commonLabels:
-  app.kubernetes.io/name: spartakus
-  app.kubernetes.io/instance: spartakus-v0.7.0
-  app.kubernetes.io/managed-by: kfctl
   app.kubernetes.io/component: spartakus
-  app.kubernetes.io/part-of: kubeflow
-  app.kubernetes.io/version: v0.7.0
+  app.kubernetes.io/name: spartakus
+kind: Kustomization
+resources:
+- application.yaml

gcp/basic-auth-ingress/overlays/application/kustomization.yaml

@@ -1,13 +1,9 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
-kind: Kustomization
 bases:
 - ../../base
-resources:
-- application.yaml
 commonLabels:
-  app.kubernetes.io/name: basic-auth-ingress
-  app.kubernetes.io/instance: basic-auth-ingress-v0.7.0
-  app.kubernetes.io/managed-by: kfctl
   app.kubernetes.io/component: basic-auth-ingress
-  app.kubernetes.io/part-of: kubeflow
-  app.kubernetes.io/version: v0.7.0
+  app.kubernetes.io/name: basic-auth-ingress
+kind: Kustomization
+resources:
+- application.yaml

gcp/cloud-endpoints/overlays/application/kustomization.yaml

@@ -1,14 +1,10 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
-kind: Kustomization
-namespace: kubeflow
 bases:
 - ../../base
-resources:
-- application.yaml
 commonLabels:
-  app.kubernetes.io/name: cloud-endpoints
-  app.kubernetes.io/instance: cloud-endpoints-v0.7.0
-  app.kubernetes.io/managed-by: kfctl
   app.kubernetes.io/component: cloud-endpoints
-  app.kubernetes.io/part-of: kubeflow
-  app.kubernetes.io/version: v0.7.0
+  app.kubernetes.io/name: cloud-endpoints
+kind: Kustomization
+namespace: kubeflow
+resources:
+- application.yaml

gcp/gpu-driver/overlays/application/kustomization.yaml

@@ -1,13 +1,9 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
-kind: Kustomization
 bases:
 - ../../base
-resources:
-- application.yaml
 commonLabels:
-  app.kubernetes.io/name: gpu-driver
-  app.kubernetes.io/instance: gpu-driver-v0.7.0
-  app.kubernetes.io/managed-by: kfctl
   app.kubernetes.io/component: gpu-driver
-  app.kubernetes.io/part-of: kubeflow
-  app.kubernetes.io/version: v0.7.0
+  app.kubernetes.io/name: gpu-driver
+kind: Kustomization
+resources:
+- application.yaml

gcp/iap-ingress/overlays/application/kustomization.yaml

@@ -1,13 +1,9 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
-kind: Kustomization
 bases:
 - ../../base
-resources:
-- application.yaml
 commonLabels:
-  app.kubernetes.io/name: iap-ingress
-  app.kubernetes.io/instance: iap-ingress-v0.7.0
-  app.kubernetes.io/managed-by: kfctl
   app.kubernetes.io/component: iap-ingress
-  app.kubernetes.io/part-of: kubeflow
-  app.kubernetes.io/version: v0.7.0
+  app.kubernetes.io/name: iap-ingress
+kind: Kustomization
+resources:
+- application.yaml

gcp/prometheus/overlays/application/kustomization.yaml

@@ -1,13 +1,9 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
-kind: Kustomization
 bases:
 - ../../base
-resources:
-- application.yaml
 commonLabels:
-  app.kubernetes.io/name: prometheus
-  app.kubernetes.io/instance: prometheus-v0.7.0
-  app.kubernetes.io/managed-by: kfctl
   app.kubernetes.io/component: prometheus
-  app.kubernetes.io/part-of: kubeflow
-  app.kubernetes.io/version: v0.7.0
+  app.kubernetes.io/name: prometheus
+kind: Kustomization
+resources:
+- application.yaml

hack/generate_tests.py

@@ -80,55 +80,6 @@ def find_kustomize_dirs(search_dirs):
 
   return changed_dirs
 
-def remove_unmatched_tests(repo_root, package_dirs):
-  """Remove any tests that don't map to a kustomization.yaml file.
-
-  This ensures tests don't linger if a package is deleted.
-  """
-
-  # Create a set of all the expected test names
-  expected_tests = set()
-
-  for d in package_dirs:
-    rpath = os.path.relpath(d, repo_root)
-    expected_tests.add(generate_test_path(repo_root, rpath))
-
-  tests_dir = os.path.join(repo_root, "tests")
-
-  possible_empty_dirs = []
-
-  # Walk the tests directory
-  for root, dirs, files in os.walk(tests_dir):
-    if not files:
-      possible_empty_dirs.append(root)
-
-    for f in files:
-      if f != TEST_NAME:
-        continue
-
-      full_test = os.path.join(root, f)
-      if full_test not in expected_tests:
-       logging.info("Removing unexpected test: %s", full_test)
-       os.unlink(full_test)
-       possible_empty_dirs.append(root)
-
-  # Prune directories that only contain test_data but no more tests
-  for d in possible_empty_dirs:
-    if not os.path.exists(d):
-      # Might have been a subdirectory of a directory that was deleted.
-      continue
-
-    items = os.listdir(d)
-
-    if len(items) > 1:
-      continue
-
-    if len(items) == 1 and items[0] != "test_data":
-      continue
-
-    logging.info("Removing directory: %s", d)
-    shutil.rmtree(d)
-
 def write_go_test(test_path, package_name, package_dir):
   """Write the go test file.
 
@@ -176,8 +127,6 @@ def write_go_test(test_path, package_name, package_dir):
   full_search_dirs = [os.path.join(repo_root, s) for s in SEARCH_DIRS]
   package_dirs = find_kustomize_dirs(full_search_dirs)
 
-  remove_unmatched_tests(repo_root, package_dirs)
-
   changed_dirs = package_dirs
 
   this_dir = os.path.dirname(__file__)