[2.13] Fix no_proxy generation tasks

[LucasBoisserie]

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:
Currently deploying a cluster using explicit proxy doesn't work ever since 2.13 was released.
A fix has been push on master but 2.13 is still broken
ref #6112

Which issue(s) this PR fixes:

Fixes #6108

Special notes for your reviewer:
Cherry pick b6e21a1

Does this PR introduce a user-facing change?:

None

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[k8s-ci-robot]

Hi @LucasBoisserie. Thanks for your PR.

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[floryut]

/ok-to-test
/lgtm

[LuckySB]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: LucasBoisserie, LuckySB

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