[Core] Run Plasma Store as a Raylet thread (with a feature flag) (#8897)

* integrate plasma store as a thread (C++)

* integrate plasma store as a thread (Python)

* fix config issues

* remove plasma component fail tests

* without forcefully kill the plasma store thread

python/ray/tests/test_multinode_failures.py

@@ -161,31 +161,6 @@ def test_raylet_failed(ray_start_cluster):
                            True)
 
 
-@pytest.mark.skipif(
-    os.environ.get("RAY_USE_NEW_GCS") == "on",
-    reason="Hanging with new GCS API.")
-@pytest.mark.parametrize(
-    "ray_start_cluster",
-    [{
-        "num_cpus": 8,
-        "num_nodes": 2,
-        "_internal_config": json.dumps({
-            # Raylet codepath is not stable with a shorter timeout.
-            "num_heartbeats_timeout": 10
-        }),
-    }],
-    indirect=True)
-def test_plasma_store_failed(ray_start_cluster):
-    cluster = ray_start_cluster
-    # Kill all plasma stores on worker nodes.
-    _test_component_failed(cluster, ray_constants.PROCESS_TYPE_PLASMA_STORE)
-
-    # No processes should be left alive on the worker nodes.
-    check_components_alive(cluster, ray_constants.PROCESS_TYPE_PLASMA_STORE,
-                           False)
-    check_components_alive(cluster, ray_constants.PROCESS_TYPE_RAYLET, False)
-
-
 if __name__ == "__main__":
     import pytest
     sys.exit(pytest.main(["-v", __file__]))