Bumped P4Runtime version of generated gRPC stubs

Now is the same as onos-setup-p4-dev.
Also reduced logging in P4Runtime client.

Change-Id: I77134aa5562327a711e223f12da94c712349544c
diff --git a/protocols/p4runtime/proto/BUCK b/protocols/p4runtime/proto/BUCK
index 6216be6..a2312b4 100644
--- a/protocols/p4runtime/proto/BUCK
+++ b/protocols/p4runtime/proto/BUCK
@@ -5,7 +5,7 @@
 PROTOBUF_VER = '3.0.2'
 GRPC_VER = '1.3.0'
 
-PI_COMMIT = '8051d54c9c3415ca800db232a226189fd17ad60a'
+PI_COMMIT = '1202bfc3d76d88e274c7ec3156a06d206e0ee068'
 PI_BASEURL = 'https://github.com/p4lang/PI.git'
 
 # Wondering which .proto files to build? Check p4runtime's Makefile: