chore: import upstream snapshot with attribution

python/ray/serve/tests/test_config_files/hangs.py

@@ -0,0 +1,13 @@
+import ray
+from ray import serve
+
+signal = ray.get_actor("signal123")
+ray.get(signal.wait.remote())
+
+
+@serve.deployment(ray_actor_options={"num_cpus": 0.1})
+def f():
+    return "hello world"
+
+
+app = f.bind()