Fix wsrep_provider for redhat
diff --git a/galera/files/my.cnf b/galera/files/my.cnf
index e5e2ab9..016f53c 100644
--- a/galera/files/my.cnf
+++ b/galera/files/my.cnf
@@ -83,7 +83,7 @@
 ##
 
 # Full path to wsrep provider library or 'none'
-wsrep_provider=/usr/lib/galera/libgalera_smm.so
+wsrep_provider={{ service.wsrep_provider }}
 
 wsrep_node_address={{ service.bind.address }}
 # Provider specific configuration options