Avoid conflicts in updateSnapshotContentStatus

[leonardoce]

This patch replace the usage of UpdateStatus with a patch against the status subresource in the updateSnapshotContentStatus.

The reason behind this change is to avoid conflicts that could potentially arise, as they pose a risk within the context of the calling function createGroupSnapshotWrapper.

If createGroupSnapshotWrapper is called multiple times for the same GroupSnapshot, this will lead to multiple stale VolumeSnapshot and VolumeSnapshotContent being created.

Related: #1050

What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespaces from that line:

/kind api-change
/kind bug
/kind cleanup
/kind design
/kind documentation
/kind failing-test
/kind feature
/kind flake

What this PR does / why we need it:

Which issue(s) this PR fixes:

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

Prevent VolumeSnapshotContent's update from erroring out because of conflicts in the CSI snapshotter sidecar.

[k8s-ci-robot]

Hi @leonardoce. Thanks for your PR.

I'm waiting for a kubernetes-csi member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[nixpanic]

/lgtm
/ok-to-test

[nixpanic]

/unassign
/assign xing-yang

[xing-yang]

In the release note, can you specify that this change is in the CSI snapshotter sidecar.

[leonardoce]

In the release note, can you specify that this change is in the CSI snapshotter sidecar.

Done, and removed that stray line too. Thank you @xing-yang

[xing-yang]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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