mgr/volumes/fs/operations: fix flake8 issues

[Nil-Cipher]

Fixes: https://tracker.ceph.com/issues/51400

Checklist

• References tracker ticket
• Updates documentation if necessary
• Includes tests for new functionality or reproducer for bug

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[varshar16]

Please add tracker ticket to commit message and change the commit title to mgr/volumes/fs/operations: fix flake8 issues. Also sign-off the commit. Otherwise looks good.

[varshar16]

Checkout this doc: https://github.com/ceph/ceph/blob/master/SubmittingPatches.rst#sign-your-work and you can make changes to your commit with git commit --amend

[ideepika]

@Nil-Cipher any updates?

[stale]

This pull request has been automatically marked as stale because it has not had any activity for 60 days. It will be closed if no further activity occurs for another 30 days.
If you are a maintainer or core committer, please follow-up on this pull request to identify what steps should be taken by the author to move this proposed change forward.
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[github-actions]

This pull request has been automatically marked as stale because it has not had any activity for 60 days. It will be closed if no further activity occurs for another 30 days.
If you are a maintainer or core committer, please follow-up on this pull request to identify what steps should be taken by the author to move this proposed change forward.
If you are the author of this pull request, thank you for your proposed contribution. If you believe this change is still appropriate, please ensure that any feedback has been addressed and ask for a code review.

[github-actions]

This pull request has been automatically closed because there has been no activity for 90 days. Please feel free to reopen this pull request (or open a new one) if the proposed change is still appropriate. Thank you for your contribution!