refactor: use common sidecar flags functionality

[DerekFrank]

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:

Continues the refactor started by kubernetes-csi/csi-lib-utils#202

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

[k8s-ci-robot]

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[k8s-ci-robot]

Hi @DerekFrank. 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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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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

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[mowangdk]

/ok-to-test

[k8s-ci-robot]

@DerekFrank: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-kubernetes-csi-external-snapshotter-unit	338b17d	link	true	/test pull-kubernetes-csi-external-snapshotter-unit

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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[mowangdk]

@DerekFrank Hi Derek, This pr is crucial for our project. Please let me know if you're unable to complete it, and we can discuss how to proceed.

[k8s-ci-robot]

PR needs rebase.

Details

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[xing-yang]

Closing this PR as #1355 is merged.