Fix import order to satisfy pylint

mehrdada · mehrdada · commit a941ec6d745f · 2018-06-07T23:38:34.000-07:00
diff --git a/src/python/grpcio_testing/grpc_testing/__init__.py b/src/python/grpcio_testing/grpc_testing/__init__.py
@@ -14,9 +14,9 @@
 """Objects for use in testing gRPC Python-using application code."""
 
 import abc
+import six
 
 from google.protobuf import descriptor
-import six
 
 import grpc
 
