optimize: using namespace from command line when deployment with helm charts

[baiyangtx]

• I have registered the PR changes.

Ⅰ. Describe what this PR did

1. Currently, the namespace set in Values.yaml only takes effect for deployment-type resources, while service and pod resources ignore this value.
2. It is customary to specify the namespace using the -n parameter in the helm install command, but currently, deployment ignores the namespace specified in the command line.

so in this PR:

1. The configuration for namespace has been removed from values.yaml.
2. When creating all Kubernetes resources, specify the value to use for the namespace as {{ .Release.Namespace }}.

Ⅱ. Does this pull request fix one issue?

Ⅲ. Why don't you add test cases (unit test/integration test)?

I confirmed the correctness of the execution result through helm template --dry-run.

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[CLAassistant]

All committers have signed the CLA.

[baiyangtx]

Install with -n

$ helm template --dry-run instance  -n middleware   ./seata-server 
---
# Source: seata-server/templates/service.yaml
apiVersion: v1
kind: Service
metadata:
  namespace: "middleware"
  name: instance-seata-server
  labels:
    app.kubernetes.io/name: seata-server
    helm.sh/chart: seata-server-1.0.0
    app.kubernetes.io/instance: instance
    app.kubernetes.io/version: "1.0"
    app.kubernetes.io/managed-by: Helm
spec:
  type: NodePort
  ports:
    - port: 30091
      targetPort: http
      protocol: TCP
      name: http
  selector:
    app.kubernetes.io/name: seata-server
    app.kubernetes.io/instance: instance

Install without -n

$ helm template --dry-run instance    ./seata-server 
---
# Source: seata-server/templates/service.yaml
apiVersion: v1
kind: Service
metadata:
  namespace: "default"
  name: instance-seata-server
  labels:
    app.kubernetes.io/name: seata-server
    helm.sh/chart: seata-server-1.0.0
    app.kubernetes.io/instance: instance
    app.kubernetes.io/version: "1.0"
    app.kubernetes.io/managed-by: Helm
spec:
  type: NodePort
  ports:
    - port: 30091
      targetPort: http
      protocol: TCP
      name: http
  selector:
    app.kubernetes.io/name: seata-server
    app.kubernetes.io/instance: instance

[codecov]

Codecov Report

Merging #6029 (b7c2840) into develop (c829e73) will decrease coverage by 0.02%.
The diff coverage is n/a.

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #6029      +/-   ##
=============================================
- Coverage      48.88%   48.86%   -0.02%     
+ Complexity      4186     4185       -1     
=============================================
  Files            793      793              
  Lines          28028    28028              
  Branches        3423     3423              
=============================================
- Hits           13702    13697       -5     
- Misses         12897    12901       +4     
- Partials        1429     1430       +1     

see 3 files with indirect coverage changes

[leizhiyuan]

New features and optimizations should be submitted for merging into the 2.x branch.

[baiyangtx]

I see. I will resubmit a new PR.