Implement k8s compatibility changes for registry operator integration test suite

[michael-valdron]

/kind user-story

Which area this user story is related to?

/area registry

User Story

As a registry operator developer I want to be to run testing of my source under Kubernetes, so that I can more effectively and efficiently ensure k8s capability with the registry operator.

After investigating changes needed to the integration test suite #1312, we want to implement those changes so that the integration test suite can run under Kubernetes environments as well as ensuring the test suite continues to run under OpenShift environments.

Acceptance Criteria

• Implement changes found in [Spike] Investigate k8s compatibility with registry operator integration test suite #1312
• Ensure any changes found in [Spike] Investigate k8s compatibility with registry operator integration test suite #1312 does not break test suite runs under OpenShift
• Revise any documentation regarding test suite changes

[github-actions]

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