Ironic system upgrade metadata

The patch adds system-level metadata for Ironic
upgrades

Change-Id: I3003232d302a52c003e262dcf78db115982ba6b5
Related-PROD: PROD-27332
diff --git a/defaults/openstack/init.yml b/defaults/openstack/init.yml
index 0bce371..97c1fe8 100644
--- a/defaults/openstack/init.yml
+++ b/defaults/openstack/init.yml
@@ -90,6 +90,9 @@
     ironic_memcache_security_enabled: ${_param:openstack_memcache_security_enabled}
     ironic_memcache_secret_key: ''
     ironic_console_enabled: true
+    ironic_old_version: ${_param:openstack_old_version}
+    ironic_version: ${_param:openstack_version}
+    ironic_upgrade_enabled: ${_param:openstack_upgrade_enabled}
     # Keystone
     keystone_old_version: ${_param:openstack_old_version}
     keystone_version: ${_param:openstack_version}