
It's bad practise to adjust root by setting password for it because it might result in broken operations. Also it's not recommended thing to do by MariaDB developers. Thus we change default `galera_root_user` value to `admin` and remove previously created root as the upgrade step. Depends-On: https://review.opendev.org/c/openstack/openstack-ansible-galera_server/+/775893 Change-Id: I71618be1fee281f399f78058bd83dc3d3c904f74