
Currently, rally_upper_constraints_url always points to master branch. It is not a valid behavior because u-c from master may not work for stable branches. This change fixes rally_upper_constraints_url. Depends-On: https://review.opendev.org/c/openstack/openstack-ansible-rabbitmq_server/+/887592 Change-Id: I016e457c0e4b7819d6d65af3bc35e06061f92d1c