fix: Override pyrabbit client host in production

shapeworks_cloud/manage_workers.py

@@ -14,7 +14,17 @@ def inspect_queue(queue_name):
     num_messages = -1
     with app.pool.acquire(block=True) as conn:
         try:
-            queue = conn.get_manager().get_queue('/', queue_name)
+            manager = conn.get_manager()
+            configuration = os.environ.get('DJANGO_CONFIGURATION')
+            if configuration == 'HerokuProductionConfiguration':
+                # Override manager hostname in production;
+                # CloudAMQP management not served through dedicated port
+                manager = pyrabbit.api.Client(
+                    host=manager.host.replace(':15672', ''),
+                    user=manager.user,
+                    passwd=manager.passwd,
+                )
+            queue = manager.get_queue('/', queue_name)
             num_messages = queue.get('messages_ready', num_messages)
         except pyrabbit.http.HTTPError:
             # queue doesn't exist yet, wait for a spawned task to create it