Remove control-plane-azure-json before creation

[lzhecheng]

What type of PR is this?
/kind bug

What this PR does / why we need it:
Remove control-plane-azure-json before creation. If the secret exists, the script to create will fail.
Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

Special notes for your reviewer:

• cherry-pick candidate

TODOs:

• squashed commits
• includes documentation
• adds unit tests

Release note:

Remove control-plane-azure-json before creation. If the secret exists, the script to create will fail.

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (e9fd64c) 55.42% compared to head (aa11f99) 55.42%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3872   +/-   ##
=======================================
  Coverage   55.42%   55.42%           
=======================================
  Files         189      189           
  Lines       19420    19420           
=======================================
  Hits        10764    10764           
  Misses       8053     8053           
  Partials      603      603           

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[mboersma]

/lgtm

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: f2fc5e8618abcd6a017207b57c63193c05daeecd

[CecileRobertMichon]

/lgtm
/approve
/cherry-pick release-1.10

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: CecileRobertMichon

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• OWNERS [CecileRobertMichon]

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[CecileRobertMichon]

/cherry-pick release-1.10

[k8s-infra-cherrypick-robot]

@CecileRobertMichon: new pull request created: #3879

In response to this:

/cherry-pick release-1.10

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