Fix timeout argument type

Author: Germano Fronza

ecs_deploy.py

@@ -188,7 +188,7 @@ def _run_parser(self):
                 sys.exit(1)
 
             # loop for desired timeout
-            timeout = self.args.get('timeout') or 90
+            timeout = int(self.args.get('timeout')) or 90
             started_at = time.time()
             while True:
                 self.running_tasks = self.client_fn('list_tasks')['taskArns']