Fix string substitution in check_rabbitmq_cluster

The string substitution in the check_rabbitmq_cluster script was improperly configured outside of the print statement. As a result, users did not receive alerts when a RabbitMQ cluster went down and encountered TypeError: unsupported operand when executing the script.

Closes-bug: #2080883

Change-Id: I049146cbd029e809bfc500a98fd62fff24ebda95

files/check_rabbitmq_cluster.py

@@ -100,7 +100,8 @@
     if (partitions > 0 or cluster < 0):
         print(
             "CRITICAL: %d partitions detected, %d nodes online."
-        ) % (partitions, cluster)
+            % (partitions, cluster)
+        )
         sys.exit(2)
     else:
         print("OK: No partitions detected")