Map PV access modes to CSI access modes based on driver capability

[chrishenzie]

What type of PR is this?
/kind feature

What this PR does / why we need it:

See KEP#2485 for more details.

This PR introduces mappings between Kubernetes PV access modes and CSI access modes. If the CSI driver supports the SINGLE_NODE_MULTI_WRITER controller capability, map ReadWriteOnce to SINGLE_NODE_MULTI_WRITER and ReadWriteOncePod to SINGLE_NODE_SINGLE_WRITER. If the CSI driver does not support this controller capability, map ReadWriteOnce to SINGLE_NODE_WRITER (current behavior preserved for backwards compatibility).

Which issue(s) this PR fixes:
Fixes #

Special notes for your reviewer:

The CSI spec change PR#476 is here and just requires merging. Until then, I have a placeholder commit using my forked version of the CSI spec.

Similarly for K8s, the API change and feature addition PR#102028 is here and still is in the early stages of review. Until then, I have a placeholder commit using my forked version of the K8s API.

Does this PR introduce a user-facing change?:

Adds mappings for PV access modes to new CSI access modes: `SINGLE_NODE_SINGLE_WRITER` and `SINGLE_NODE_MULTI_WRITER`.

[k8s-ci-robot]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[chrishenzie]

/assign @msau42
/assign @jingxu97

[humblec]

@chrishenzie ( just as a suggestion) it may be easy to have table/matrix representation of ToCSIAccessMode logic in source code comment or in the PR to make sure we are covering all the scenario..

[chrishenzie]

@humblec I've added the tables to kubernetes-csi/csi-lib-utils#89, PTAL, I plan on depending on this library across our sidecars, I just need to update this one to do that.

[humblec]

@humblec I've added the tables to kubernetes-csi/csi-lib-utils#89, PTAL, I plan on depending on this library across our sidecars, I just need to update this one to do that.

@chrishenzie Thanks 👍 , it really helps !

[chrishenzie]

/hold

Rebased on #656 which is blocked on release of v1.22.

[chrishenzie]

/hold cancel

[chrishenzie]

/assign @jsafrane

[jsafrane]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: chrishenzie, jsafrane

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