Automated cherry pick of #72682: Add metrics-port to kube-proxy cmd flags.

[whypro]

Cherry pick of #72682 on release-1.12.

#72682: Add metrics-port to kube-proxy cmd flags.

[k8s-ci-robot]

Hi @whypro. Thanks for your PR.

I'm waiting for a kubernetes 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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[MrHohn]

/ok-to-test
/lgtm

[whypro]

/retest

[feiskyer]

ping original PR approvers @thockin

[MrHohn]

/assign @thockin
for approval.

[thockin]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: thockin, whypro

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[feiskyer]

/kind bug
/priority important-soon
/sig network