Enable nova update_cells by default

PROD-36548

Change-Id: Ic1e431f639fa44b120b17f4f894f15cf5e377b7a
diff --git a/defaults/openstack/init.yml b/defaults/openstack/init.yml
index db4e92b..f367a83 100644
--- a/defaults/openstack/init.yml
+++ b/defaults/openstack/init.yml
@@ -55,6 +55,7 @@
     # Nova
     mysql_nova_username: nova
     mysql_nova_port: 3307
+    nova_control_update_cells: True
     keystone_nova_username: nova
     nova_memcache_security_enabled: ${_param:openstack_memcache_security_enabled}
     nova_memcache_secret_key: ''