[release-1.29] cleanup: refactor fallback to sas token on azcopy copy command

[umagnus]

What type of PR is this?

/kind cleanup

What this PR does / why we need it:

[release-1.29] cleanup: refactor fallback to sas token on azcopy copy command
cherry-pick for #2099

Which issue(s) this PR fixes:

Fixes #

Requirements:

• uses conventional commit messages
• includes documentation
• adds unit tests
• tested upgrade from previous version

Special notes for your reviewer:

Release note:

none

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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

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[k8s-ci-robot]

Hi @umagnus. Thanks for your PR.

I'm waiting for a kubernetes-sigs 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.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[andyzhangx]

/ok-to-test

[andyzhangx]

/retest

[andyzhangx]

/retest

[umagnus]

/retest