To ensure that we have a consistent implementation
between the galera_client and galera_server roles,
we change the galera_server role to match galera_client
as was done in I520ccbadf3320b0d07fc83e3dbec9ea2bd16ec83
This updates it to a mechanism which will be easier to
maintain.
Change-Id: I7ac1a5e3a05aa3d0b4fae86c4a325ef147a9a528
Jesse Pretorius