WIP: Ignore CSIMigrationControlPlane FeatureSet

[bertinatto]

This is a PoC implementation of openshift/enhancements#549.

Not ready for review yet.

[kikisdeliveryservice]

Just as a note there is overlap on funcs touched between this pr and #2386 I believe..

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[openshift-ci]

@bertinatto: The following tests failed, say /retest to rerun all failed tests:

Test name	Commit	Details	Rerun command
ci/prow/okd-e2e-aws	2589e48	link	/test okd-e2e-aws
ci/prow/e2e-aws	2589e48	link	/test e2e-aws

Full PR test history. Your PR dashboard.

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[bertinatto]

We're not going to take this approach anymore.