- Remove that validation from the controller since the CRD already
validates it during creates and updates.
- Also finish the supervisor_federationdomain_status_test.go by adding
more tests for both controller validations and CRD validations
- Also fix small bug in controller where it used Sprintf wrong
- Rename WaitForTestFederationDomainStatus test helper to
WaitForFederationDomainStatusPhase