WFLY-2090 - disable metrics until proper fix is done
Merge pull request #5152 from ctomc/modcluster

WFLY-2090 - disable metrics until proper fix is done
[WFLY-490][WFLY-1756] Include access control for read-operation-description
[WFLY-490] Some minor clean up and removal of unused imports, variables and methods in test cases.
[WFLY-2087] / [WFLY-490] Add a new constraint to ensure that the roles SUPERUSER and AUDITOR can only be updated by SUPERUSER.