Enable groups testing for K2K scenarios
Enable groups testing for K2K scenarios

Opt into optional testing of the groups parameter in K2K SAML
assertions.

Change-Id: Id98310ab052623456316565f1ab71b183127f8fa
Depends-on: https://review.opendev.org/721771

openstack/keystone,mahak/keystone,openstack/keystone,openstack/keystone,mahak/keystone,mahak/keystone