always overwrite TargetVolumeAttributesClassName when setting Status

[huww98]

What type of PR is this?

/kind cleanup
/kind api-change

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:

So it will be clear which VAC the status is describing.

Specifically, we now set target for Pending status to indicate which VAC we are waiting for.

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

TargetVolumeAttributesClassName is now valid for Pending status

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: huww98
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[k8s-ci-robot]

Hi @huww98. 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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[gnufied]

/ok-to-test

[gnufied]

This looks okay to me. What do you think @sunnylovestiramisu @AndrewSirenko ?

[gnufied]

/assign @sunnylovestiramisu @AndrewSirenko