CNF-14833: E2E: metrics exposed securely

[rbaturov]

This is a follow-up PR for #1007 and #1035, adding e2e tests to test their functionality.
The tests verify that secured metrics fetching can be established using kube-rbac-proxy, for both the manager pod and rte workers.

[openshift-ci]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: rbaturov
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[openshift-ci-robot]

@rbaturov: This pull request references CNF-14833 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the story to target the "4.18.0" version, but no target version was set.

In response to this:

This is a follow-up PR for #1007 and #1035, adding e2e tests to test their functionality.
The tests verify that secured metrics fetching can be established using kube-rbac-proxy, for both the manager pod and rte workers.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the openshift-eng/jira-lifecycle-plugin repository.

[openshift-ci]

@rbaturov: 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/ci-e2e-install-hypershift	9f47d67	link	true	/test ci-e2e-install-hypershift

Full PR test history. Your PR dashboard.

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