addon: Upgrade VolumeSnapshot to GA(v1)

[govargo]

What type of PR is this?

/area addons
/kind feature

What this PR does / why we need it:

This PR upgrades VolumeSnapshot from v1beta1 to v1.

Which issue(s) this PR fixes:

Fix #10636

Does this PR introduce a user-facing change?

Yes, this PR change VolumeSnaphost API version(v1).

Before this PR

apiVersion: snapshot.storage.k8s.io/v1beta1
kind: VolumeSnapshot
metadata:
  name: new-snapshot-demo
spec:
  volumeSnapshotClassName: csi-hostpath-snapclass
  source:
    persistentVolumeClaimName: hpvc

After this PR

Changed only version to v1.

apiVersion: snapshot.storage.k8s.io/v1
kind: VolumeSnapshot
metadata:
  name: new-snapshot-demo
spec:
  volumeSnapshotClassName: csi-hostpath-snapclass
  source:
    persistentVolumeClaimName: hpvc

VolumeSnapshot has the conversion logic of the api version. So, if users apply v1beta1 manifest, volumeSnapshot controller automaticaly coverts the api version and the v1beta1 object will be created.

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

NONE

[k8s-ci-robot]

Hi @govargo. Thanks for your PR.

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[minikube-bot]

Can one of the admins verify this patch?

[govargo]

/assign @ilya-zuyev

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: govargo, medyagh

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