Fix Galera socket for RedHat
Fix Galera socket for RedHat

At the moment, RedHat currently installs and listens on the
/var/lib/mysql/mysql.sock path, this can be seen by the following:

mysqld  13627 mysql   33u     unix 0xffff88079261cc00        0t0   3312115 /var/lib/mysql/mysql.sock

This patch resolves it which will allow the health checks to
function as they rely on the [client] section which contains
an incorrect path.

Change-Id: Iec88e911c6cf207bcea5bd067f9743b3eb50f60e

os-cloud/openstack-ansible-galera_server,openstack/openstack-ansible-galera_server,os-cloud/openstack-ansible-galera_server,openstack/openstack-ansible-galera_server