fix: restore test_unitray.py to prev version

src/service/tests/test_unitary.py

@@ -15,11 +15,12 @@
 import copy, grpc, logging, pytest
 from common.proto.context_pb2 import (
     Context, ContextId, Device, DeviceId, Link, LinkId, Service, ServiceId, Topology, TopologyId)
+from common.tests.PytestGenerateTests import pytest_generate_tests # (required) pylint: disable=unused-import
 from common.tools.grpc.Tools import grpc_message_to_json_string
 from context.client.ContextClient import ContextClient
 from device.client.DeviceClient import DeviceClient
 from service.client.ServiceClient import ServiceClient
-from .PrepareTestScenario import (  # pylint: disable=unused-import
+from .PrepareTestScenario import ( # pylint: disable=unused-import
     # be careful, order of symbols is important here!
     mock_service, service_service, context_client, device_client, service_client)