Update integration test to current sagemaker-python-sdk API.

Author: davidthomas426

test/integration/local/test_serving.py

@@ -89,10 +89,10 @@ def test_serving_calls_model_fn_once(image_uri, sagemaker_local_session, instanc
 @contextmanager
 def _predictor(model_tar, script, image, sagemaker_local_session, instance_type,
                model_server_workers=None):
-    model = PyTorchModel('file://{}'.format(model_tar),
-                         ROLE,
-                         script,
-                         image=image,
+    model = PyTorchModel(model_data='file://{}'.format(model_tar),
+                         role=ROLE,
+                         entry_point=script,
+                         image_uri=image,
                          sagemaker_session=sagemaker_local_session,
                          model_server_workers=model_server_workers)