[WIP] [Test] POC for floating upgrades using channels

[pierDipi]

See discussion here #2582 (comment)

[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 APPROVED

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[pierDipi]

/test 412-test-upgrade-aws-412

[openshift-ci]

@pierDipi: 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/412-test-upgrade-aws-412	1b6c6e3	link	true	/test 412-test-upgrade-aws-412

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