Allow running the no-op group validation
Allow running the no-op group validation

This change is needed in order to allow the
CLI to run this validation group.

Depends-On: Ied6eaa4009d624737d2dfac8a61f3a273537ce13
Change-Id: I018fa71536bd15e8f5300c1e87b9392ebf896593

openstack/python-tripleoclient