bump CSI spec to next version

[huww98]

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:

bump CSI spec to next version and fix the build failure

remove direct deps on github.com/golang/protobuf. Since it is outdated and replaced by google.golang.org/protobuf

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

This uses an unreleased version of CSI spec. If we are not in hurry merging this, I'll update this PR when a new release is available.

Does this PR introduce a user-facing change?:

NONE

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[k8s-ci-robot]

Hi @huww98. Thanks for your PR.

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: huww98
Once this PR has been reviewed and has the lgtm label, please assign jsafrane for approval. For more information see the Kubernetes Code Review Process.

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[jsafrane]

I think we do not update to unreleased CSI spec version.
If you're prototyping a feature, you can send a WIP PR with the feature + CSI spec update, so others can comment or test.

[huww98]

The next CSI spec version will bring a breaking change, so I just raised this PR earlier to fix it, so that we can do the tests and review earlier.

[jsafrane]

/ok-to-test

I'm enabling CI in this PR to see any breakages then.
/hold
until the official CSI spec release

[k8s-ci-robot]

PR needs rebase.

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