[YUNIKORN-2631] Support canonical labels for queue/applicationId in Admission Controller

[chenyulin0719]

What is this PR for?

When Admission Controller try to patch queue/applicationID to pod, also add canonical representations.

• applicationId (legacy, should be removed in 1.7.0)
• queue (legacy, should be removed in 1.7.0)
• yunikorn.apache.org/app-id (New, Canonical Label)
• yunikorn.apache.org/queue (New, Canonical Label)

In 1.6.0, if only canonical labels were found in pod, add the value back to legacy labels for backward compatibility

• applicationId
• queue

What type of PR is it?

• - Improvement

Todos

• Support canonical representation in scheduler
• Update documents

What is the Jira issue?

https://issues.apache.org/jira/browse/YUNIKORN-2631

How should this be tested?

1. make test
2. create below pod and check the pod labels

• pod-with-legacy-labels: AM won't add new labels
• pod-with-no-labels: AM add both legacy/canonical labels
• pod-with-canonical-labels: Besides the existing canonical labels, AM also add the value to legacy labels.

apiVersion: v1
kind: Pod
metadata:
  labels:
    app: sleep
    applicationId: "application-sleep-0001"
    queue: "root.sandbox"
  name: pod-with-legacy-labels
spec:
  schedulerName: yunikorn
  restartPolicy: Never
  containers:
    - name: sleep-6000s
      image: "alpine:latest"
      command: ["sleep", "6000"]
      resources:
        requests:
          cpu: "100m"
          memory: "500M"
---
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: sleep
  name: pod-with-no-labels
spec:
  schedulerName: yunikorn
  restartPolicy: Never
  containers:
    - name: sleep-6000s
      image: "alpine:latest"
      command: ["sleep", "6000"]
      resources:
        requests:
          cpu: "100m"
          memory: "500M"
---
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: sleep
    yunikorn.apache.org/app-id: "application-sleep-0003"
    yunikorn.apache.org/queue: "root.sandbox"
  name: pod-with-canonical-labels
spec:
  schedulerName: yunikorn
  restartPolicy: Never
  containers:
    - name: sleep-6000s
      image: "alpine:latest"
      command: ["sleep", "6000"]
      resources:
        requests:
          cpu: "100m"
          memory: "500M"

Screenshots (if appropriate)

• pod-with-legacy-labels

• pod-with-no-labels

• pod-with-canonical-labels:

Questions:

NA

[codecov]

Codecov Report

Attention: Patch coverage is 38.27160% with 50 lines in your changes missing coverage. Please review.

Project coverage is 67.15%. Comparing base (58adfe9) to head (9c37688).

❗ Current head 9c37688 differs from pull request most recent head d8b8a7a

Please upload reports for the commit d8b8a7a to get more accurate results.

Files	Patch %	Lines
pkg/client/apifactory.go	0.00%	16 Missing ⚠️
pkg/cache/context.go	38.88%	6 Missing and 5 partials ⚠️
pkg/cmd/admissioncontroller/main.go	0.00%	11 Missing ⚠️
pkg/admission/conf/am_conf.go	0.00%	5 Missing ⚠️
pkg/client/apifactory_mock.go	0.00%	3 Missing ⚠️
pkg/admission/namespace_cache.go	60.00%	1 Missing and 1 partial ⚠️
pkg/admission/priority_class_cache.go	60.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #46      +/-   ##
==========================================
- Coverage   67.25%   67.15%   -0.10%     
==========================================
  Files          70       70              
  Lines        7600     7629      +29     
==========================================
+ Hits         5111     5123      +12     
- Misses       2277     2287      +10     
- Partials      212      219       +7     

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