Add galera system level upgrade metadata

Change-Id: I610e290986189704da54a8386d62b4c3b27c8d52
Related-prod: PROD-29630
diff --git a/defaults/openstack/init.yml b/defaults/openstack/init.yml
index 2e6362d..0e940a0 100644
--- a/defaults/openstack/init.yml
+++ b/defaults/openstack/init.yml
@@ -26,6 +26,8 @@
     openstack_rabbitmq_x509_enabled: False
     # RabbitMQ
     rabbitmq_upgrade_enabled: ${_param:openstack_upgrade_enabled}
+    # Galera
+    galera_upgrade_enabled: ${_param:openstack_upgrade_enabled}
     # Openstack memcache
     openstack_memcached_server_bind_address: 0.0.0.0
     openstack_memcache_security_enabled: False
diff --git a/galera/server/cluster.yml b/galera/server/cluster.yml
index e215910..a4b3f0a 100644
--- a/galera/server/cluster.yml
+++ b/galera/server/cluster.yml
@@ -2,3 +2,4 @@
 - service.haproxy.proxy.single
 - system.haproxy.proxy.listen.openstack.galera
 - system.keepalived.cluster.instance.galera_vip
+- system.galera.upgrade
diff --git a/galera/upgrade/init.yml b/galera/upgrade/init.yml
new file mode 100644
index 0000000..dd49ff2
--- /dev/null
+++ b/galera/upgrade/init.yml
@@ -0,0 +1,4 @@
+parameters:
+  galera:
+    upgrade:
+      enabled: ${_param:galera_upgrade_enabled}