Fixes missing mock lib (#139) and protobuf pip install
Fixes missing mock lib (#139) and protobuf pip install

kchodorow/serving,avloss/serving,tensorflow/serving,addappio/serving,tensorflow/serving,penguin138/serving,addappio/serving,avloss/serving,tensorflow/serving,penguin138/serving,penguin138/serving,penguin138/serving,addappio/serving,sreddybr3/serving,sreddybr3/serving,addappio/serving,sreddybr3/serving,kchodorow/serving,tensorflow/serving,avloss/serving,sreddybr3/serving,kchodorow/serving,avloss/serving