.github/workflows: Enable GH action that retests failed workflows

[timflannagan]

Description of the change:

Motivation for the change:

Reviewer Checklist

• Implementation matches the proposed design, or proposal is updated to match implementation
• Sufficient unit test coverage
• Sufficient end-to-end test coverage
• Docs updated or added to /doc
• Commit messages sensible and descriptive

[timflannagan]

Note: we already merged this in the operator-registry repository, and this needs to be merged first before we can get those command(s) working.

[dinhxuanvu]

/lgtm

[kevinrizza]

/approve

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dinhxuanvu, kevinrizza, timflannagan

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[timflannagan]

/override ci/prow/images
/override ci/prow/unit
/override ci/prow/verify

[openshift-ci-robot]

@timflannagan: Overrode contexts on behalf of timflannagan: ci/prow/images, ci/prow/unit, ci/prow/verify

In response to this:

/override ci/prow/images
/override ci/prow/unit
/override ci/prow/verify

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