OCPEDGE-1485: Add initial version of etcd kill and recovery test

[fonta-rh]

Add test for TNF etcd recovery from fatal failure.

[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: fonta-rh
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[openshift-ci-robot]

@fonta-rh: This pull request references OCPEDGE-1485 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 "4.21.0" version, but no target version was set.

In response to this:

Add test for TNF etcd recovery from fatal failure.

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[openshift-ci]

@fonta-rh: The following tests 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-gcp-csi	f32ae4c	link	true	/test e2e-gcp-csi
ci/prow/e2e-aws-csi	f32ae4c	link	true	/test e2e-aws-csi

Full PR test history. Your PR dashboard.

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