Merge pull request #1461 from ageron:patch-1

PiperOrigin-RevId: 345371979

Author: tensorflow-copybara

tensorflow_serving/tools/pip_package/setup.py

@@ -53,7 +53,7 @@
 
 
 REQUIRED_PACKAGES = [
-    'grpcio>=1.0<2',
+    'grpcio>=1.0,<2',
     'protobuf>=3.6.0',
 ] + _TF_REQ