https://github.com/openshift/origin/pull/23453 restored most of test-cmd. There is a blacklist that needs to be checked here: https://github.com/openshift/origin/blob/master/test/extended/cmd/cmd.go#L27-L33 And then separate commits to revert here https://github.com/openshift/origin/pull/23453/commits . Most are related to login/authentication changes.
Opened https://github.com/openshift/oc/pull/80 and commented on 4.2 release notes https://github.com/openshift/openshift-docs/issues/16327#issuecomment-526624949
This is still a problem there are still 5 tests disable in https://github.com/openshift/origin/blob/master/test/extended/cmd/cmd.go#L27-L33 that needs to go back. Sally mind looking into this one? I'll lower the severity but it's something worthy fixing sooner than later.
We'll be slowly going in the direction of moving those tests into e2e, thus closing.