Add Quota with Scope Design Details of VolumeAttributesClass

[sunnylovestiramisu]

• One-line PR description: Add Quota with Scope Design Details of VolumeAttributesClass

• Issue link:

• Other comments: discussed in the api-machinery meeting, the quota restriction should not block status update.

[sunnylovestiramisu]

/assign @deads2k
/assign @carlory
/assign @msau42

[k8s-ci-robot]

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[deads2k]

/lgtm

[carlory]

1. 3 resource quotas are created for gold, silver and bronze classes.

apiVersion: v1
kind: ResourceQuota
metadata:
  name: gold
spec:
  hard:
    count/persistentvolumeclaims: "1"
  scopeSelector:
    matchExpressions:
    - operator: In
      scopeName: VolumeAttributesClass
      values:
      - gold
---
apiVersion: v1
kind: ResourceQuota
metadata:
  name: silver
spec:
  hard:
    count/persistentvolumeclaims: "1"
  scopeSelector:
    matchExpressions:
    - operator: In
      scopeName: VolumeAttributesClass
      values:
      - silver
---
apiVersion: v1
kind: ResourceQuota
metadata:
  name: bronze
spec:
  hard:
    count/persistentvolumeclaims: "1"
  scopeSelector:
    matchExpressions:
    - operator: In
      scopeName: VolumeAttributesClass
      values:
      - bronze

2. Let's assume that there is a given PVC in the cluster.

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: myclaim
spec:
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 1Gi
  volumeAttributesClassName: gold
status:
  phase: Bound
  currentVolumeAttributesClassName: silver
  modifyVolumeStatus:
    targetVolumeAttributesClassName: bronze
    status: "InProgress"

3. What is the desired status of the above quotas at the same time?