Add RabbitMQ system level upgrade metadata

Change-Id: I792c942ad424b3a8c3930062b8cada8f9edd8f0f
Related-Prod: PROD-29461
(cherry picked from commit 757f653dfee6166a39eb0bcf4226472495070aee)
diff --git a/rabbitmq/upgrade/init.yml b/rabbitmq/upgrade/init.yml
new file mode 100644
index 0000000..3a75137
--- /dev/null
+++ b/rabbitmq/upgrade/init.yml
@@ -0,0 +1,4 @@
+parameters:
+  rabbitmq:
+    upgrade:
+      enabled: ${_param:rabbitmq_upgrade_enabled}