Research Openshift tests in Zuul alternatives

[majamassarini]

What happened? What is the problem?

Openshift cluster is not working anymore in Zuul for 3 repos (see RETRY_LIMIT errors)

• deployment: [pre-commit.ci] pre-commit autoupdate #538
• packit-service: [pre-commit.ci] pre-commit autoupdate packit-service#2220
• sandcastle: [pre-commit.ci] pre-commit autoupdate sandcastle#201

Research alternative solutions.

Read this research: https://packit.dev/research/testing/openshift-to-podman-kube-play
Can the above solution solve tests for all three projects?
Can we move all the tests to testing farm?