Ironic system upgrade metadata

The patch adds system-level metadata for Ironic
upgrades

Change-Id: I3003232d302a52c003e262dcf78db115982ba6b5
Related-PROD: PROD-27332
diff --git a/ironic/conductor/cluster.yml b/ironic/conductor/cluster.yml
index 2394a29..7a4d4ff 100644
--- a/ironic/conductor/cluster.yml
+++ b/ironic/conductor/cluster.yml
@@ -2,6 +2,7 @@
 - system.salt.minion.cert.mysql.clients.openstack.ironic
 - system.salt.minion.cert.rabbitmq.clients.openstack.ironic
 - service.ironic.conductor.cluster
+- system.ironic.upgrade
 parameters:
   linux:
     system: