Ironic system upgrade metadata

The patch adds system-level metadata for Ironic
upgrades

Change-Id: I3003232d302a52c003e262dcf78db115982ba6b5
Related-PROD: PROD-27332
diff --git a/ironic/upgrade/init.yml b/ironic/upgrade/init.yml
new file mode 100644
index 0000000..ebd9bfd
--- /dev/null
+++ b/ironic/upgrade/init.yml
@@ -0,0 +1,6 @@
+parameters:
+  ironic:
+    upgrade:
+      enabled: ${_param:ironic_upgrade_enabled}
+      old_release: ${_param:ironic_old_version}
+      new_release: ${_param:ironic_version}