[Test][Autoscaler] deflaky unexpected dead actors in tests by setting max_restarts=-1 (#3700)

Author: rueian

ray-operator/test/e2eautoscaler/create_detached_actor.py

@@ -9,7 +9,9 @@
 parser.add_argument('--num-custom-resources', type=float, default=0)
 args = parser.parse_args()
 
-@ray.remote(num_cpus=args.num_cpus, num_gpus=args.num_gpus, resources={"CustomResource": args.num_custom_resources})
+# set max_restarts=-1 as a workaround to restart unexpected death in tests.
+# TODO (rueian): Remove the max_restarts workaround when https://github.com/ray-project/ray/issues/40864 is fixed.
+@ray.remote(max_restarts=-1, num_cpus=args.num_cpus, num_gpus=args.num_gpus, resources={"CustomResource": args.num_custom_resources})
 class Actor:
     pass