Wait for serving cert mount before starting HTTPS metrics

[Anna-Koudelkova]

Raising the PR to fix racing issue I have faced in testing FIO 1.4.0 on RHCOS 10 nodes - test results for that can be found here

Created by: Cursor

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Anna-Koudelkova

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[openshift-ci]

@Anna-Koudelkova: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/e2e-aws	bd55e42	link	true	/test e2e-aws

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