This moves review02 out of the review-staging group and into the main
review group. At this point, review01.openstack.org is inactive so we
can remove all references to openstack.org from the groups. We update
the system-config job to run against a focal production server, and
remove the unneeded rsync setup used to move data.
This additionally enables replication; this should be a no-op when
applied as part of the transition process is to manually apply this,
so that DNS setup can pull zone changes from opendev.org.
It also switches to the mysql connector, as noted inline we found some
issues with mariadb.
Note backups follow in a separate step to avoid doing too much at
once, hence dropping the backup group from the testing list.
Change-Id: I7ee3e3051ea8f3237fd5f6bf1dcc3e5996c16d10
8607ff7d81