Get rid of argocd/config-management-plugin, add a test applicationset, switch argocd image to latest (2.8.0-rc7)

argocd/manifests/test-applicationset/README.md

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+# So I have an idea
+
+![](https://media.giphy.com/media/ojpU1QtYzaVDa/giphy.gif)
+
+
+```bash
+export HOSTNAME="www.hats4dogs.biz"
+export NAMESPACE="vouch"
+export ENVIRONMENT="prod"
+
+yq -i '.spec.generators[].list.elements[0].hostname = env(HOSTNAME)' vouch.yaml
+yq -i '.spec.generators[].list.elements[0].namespace = env(NAMESPACE)' vouch.yaml
+yq -i '.spec.generators[].list.elements[0].environment = env(ENVIRONMENT)' vouch.yaml
+
+kubectl apply -f vouch.yaml -n argocd
+```

argocd/manifests/test-applicationset/vouch.yaml

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+apiVersion: argoproj.io/v1alpha1
+kind: ApplicationSet
+metadata:
+  name: vouch
+spec:
+  goTemplate: true
+  generators:
+  - plugin:
+      configMapRef:
+        name: argocd-generator-plugin-cm
+      input:
+        parameters:
+          key1: value1
+  template:
+    metadata:
+      name: vouch
+    spec:
+      project: default
+      source:
+        repoURL: 'https://vouch.github.io/helm-charts/'
+        targetRevision: 3.1.0
+        chart: vouch
+        helm:
+          values: |
+            image:
+              tag: 0.39.0
+            existingSecretName: vouch-existing-secret
+            ingress:
+              enabled: true
+              annotations:
+                kubernetes.io/ingress.class: nginx
+                cert-manager.io/cluster-issuer: letsencrypt-staging
+              paths:
+                - /
+              hosts:
+                - {{.vouch_hostname}}
+              tls:
+                - secretName: vouch-tls
+                  hosts:
+                    - {{.vouch_hostname}}
+      destination:
+        server: "https://kubernetes.default.svc"
+        namespace: vouch