update pytorch_train skip message

Author: Deng

tests/integ/test_pytorch_train.py

@@ -88,7 +88,10 @@ def test_fit_deploy(sagemaker_local_session, pytorch_full_version):
         predictor.delete_endpoint()
 
 
-@pytest.mark.skipif(PYTHON_VERSION == "py2", reason="PyTorch Inference not supporting Python2.")
+@pytest.mark.skipif(
+    PYTHON_VERSION == "py2",
+    reason="Python 2 is supported by PyTorch {} and lower versions.".format(LATEST_PY2_VERSION),
+)
 def test_deploy_model(pytorch_training_job, sagemaker_session, cpu_instance_type):
     endpoint_name = "test-pytorch-deploy-model-{}".format(sagemaker_timestamp())