[VOL-1034, VOL-1035, VOL-1037] This commit consists of:
1) Implementation of inter-adapter communication using flows
as proxy message between an ONU and its parent OLT.
2) Update the protos to reflect the inter-adapter message structure
3) Cleanup the ponsim adapters to removed unsued references and
general cleanup.

Change-Id: Ibe913a80a96d601fed946d9b9db55bb8d4f2c15a
diff --git a/adapters/Makefile b/adapters/Makefile
index 9374284..2531985 100644
--- a/adapters/Makefile
+++ b/adapters/Makefile
@@ -178,6 +178,7 @@
 ifneq ($(VOLTHA_BUILD),docker)
 	make -C protos
 else
+	cp ../protos/*.proto ./protos
 	docker build $(DOCKER_BUILD_ARGS) -t ${REGISTRY}${REPOSITORY}voltha-protos:${TAG} -f docker/Dockerfile.protos .
 endif