fixed broken test

Author: Andrei Neagu

services/director-v2/tests/integration/02/test_mixed_dynamic_sidecar_and_legacy_project.py

@@ -206,9 +206,10 @@ def mock_sidecars_client(mocker: MockerFixture) -> mock.Mock:
         "simcore_service_director_v2.modules.dynamic_sidecar.api_client.SidecarsClient"
     )
     for function_name, return_value in [
-        ("pull_service_output_ports", None),
-        ("restore_service_state", None),
+        ("pull_service_output_ports", 0),
+        ("restore_service_state", 0),
         ("push_service_output_ports", None),
+        ("save_service_state", 0),
     ]:
         mocker.patch(
             f"{class_path}.{function_name}",