Update grpc-netty, grpc-protobuf, grpc-stub to 1.22.2 (#634)
Update grpc-netty, grpc-protobuf, grpc-stub to 1.22.2 (#634)


scalapb/ScalaPB,scalapb/ScalaPB,trueaccord/ScalaPB,scalapb/ScalaPB,scalapb/ScalaPB