Allow volume snapshot creation from supervisor directly.

[akankshapanse]

NOTE: This is temporary change and will be reverted after storage quota support for snapshots FSS enabled.

What this PR does / why we need it:
This PR allows snapshot creation from supervisor by removing webhook check temporarily for ease of testing.
NOTE: This is temporary change and will be reverted after storage quota support for snapshots FSS enabled.

Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #

Testing done:
Before fix:

root@420bc997e27955b098ab2b5241b87781 [ ~ ]# kubectl create -f snap.yaml -n svc-velero-domain-c52
Error from server (Snapshot creation initiated directly from the Supervisor cluster is not supported. Please initiate snapshot creation from the Guest cluster.): error when creating "snap.yaml": admission webhook "validation.csi.vsphere.vmware.com" denied the request: Snapshot creation initiated directly from the Supervisor cluster is not supported. Please initiate snapshot creation from the Guest cluster.
root@420bc997e27955b098ab2b5241b87781 [ ~ ]#

After fix with manually enabling StorageQuotaM2 FSS and restarting webhook pods:

root@420bc997e27955b098ab2b5241b87781 [ ~ ]# kubectl get configmaps -n vmware-system-csi csi-feature-states -o yaml
apiVersion: v1
data:
  async-query-volume: "true"
  block-volume-snapshot: "true"
  cnsmgr-suspend-create-volume: "true"
  csi-sv-feature-states-replication: "true"
  fake-attach: "true"
  file-volume: "true"
  improved-csi-idempotency: "true"
  list-volumes: "true"
  listview-tasks: "true"
  online-volume-extend: "true"
  sibling-replica-bound-pvc-check: "true"
  storage-quota-m2: "true"                         <<< changed manually
  tkgs-ha: "true"
  trigger-csi-fullsync: "false"
  volume-extend: "true"
  volume-health: "true"
kind: ConfigMap
metadata:
  annotations:
    kubectl.kubernetes.io/last-applied-configuration: |
      {"apiVersion":"v1","data":{"async-query-volume":"true","block-volume-snapshot":"true","cnsmgr-suspend-create-volume":"true","csi-sv-feature-states-replication":"true","fake-attach":"true","file-volume":"true","improved-csi-idempotency":"true","list-volumes":"true","listview-tasks":"true","online-volume-extend":"true","sibling-replica-bound-pvc-check":"true","tkgs-ha":"true","trigger-csi-fullsync":"false","volume-extend":"true","volume-health":"true"},"kind":"ConfigMap","metadata":{"annotations":{},"name":"csi-feature-states","namespace":"vmware-system-csi"}}
  creationTimestamp: "2024-04-11T08:44:52Z"
  name: csi-feature-states
  namespace: vmware-system-csi
  resourceVersion: "12389353"
  uid: 3bc08c5b-c04e-49ae-abe5-b4042f7d9ea2
root@420bc997e27955b098ab2b5241b87781 [ ~ ]#

root@420bc997e27955b098ab2b5241b87781 [ ~ ]# kubectl get pods -n vmware-system-csi
NAME                                    READY   STATUS             RESTARTS     AGE
vsphere-csi-controller-79bf77c5-qdpxx   7/7     Running            0            3m8s
vsphere-csi-controller-79bf77c5-qqnmp   7/7     Running            0            3m17s
vsphere-csi-webhook-5d4c4b9c8b-8rjpz    0/1     CrashLoopBackOff   1 (3s ago)   5s
vsphere-csi-webhook-5d4c4b9c8b-wj9mb    1/1     Running            0            5s          <<< restarted to fetch latest FSS value
root@420bc997e27955b098ab2b5241b87781 [ ~ ]#

root@420bc997e27955b098ab2b5241b87781 [ ~ ]# kubectl create -f snap.yaml -n svc-velero-domain-c52
volumesnapshot.snapshot.storage.k8s.io/example-raw-block-snapshot created
root@420bc997e27955b098ab2b5241b87781 [ ~ ]#

Special notes for your reviewer:

Release note:

Allow volume snapshot creation from supervisor directly.

[svcbot-qecnsdp]

Started WCP block pre-checkin pipeline... Build Number: 1393

[svcbot-qecnsdp]

Build ID: 1393
WCP build status: FAILURE 
Stage before exit: null 

[svcbot-qecnsdp]

Started WCP block pre-checkin pipeline... Build Number: 1396

[svcbot-qecnsdp]

Build ID: 1396
WCP build status: FAILURE 
Stage before exit: null 

[akankshapanse]

WCP precheck-in pipeline result with StorageQuotaM2 FSS disabled:

PR 2852
Ran 13 of 848 Specs in 2676.707 seconds 
SUCCESS! -- 13 Passed | 0 Failed | 0 Pending | 835 Skipped 
PASS 
Ginkgo ran 1 suite in 45m41.962041288s 
Test Suite Passed 
make: Leaving directory `/home/worker/workspace/csi-wcp-precheckin/Results/1398/vsphere-csi-driver'

[deepakkinni]

/approve

[xing-yang]

/approve
/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: akankshapanse, deepakkinni, xing-yang

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