VOL-1489: Message and type needed for interadapter tech profile push

New InterAdapter message type and message needed to share
configured pon specifics between the olt and the onu

This includes work done with this commit:
https://gerrit.opencord.org/#/c/13561/

*Also* adjust Makefile to force the regenaration of voltha.pb
everytime in the event of proto or stub change.

Change-Id: Ic3fb129c8f04630fa0b10c7891f72285a72ea668
diff --git a/Makefile b/Makefile
index 1eea24f..a0f1ad6 100644
--- a/Makefile
+++ b/Makefile
@@ -40,6 +40,9 @@
 PROTOC_DOWNLOAD_URI := $(PROTOC_DOWNLOAD_PREFIX)/v$(PROTOC_VERSION)/$(PROTOC_TARBALL)
 PROTOC_BUILD_TMP_DIR := "/tmp/protobuf-build-$(shell uname -s | tr '[:upper:]' '[:lower:]')"
 
+# Force pb file to be regenrated every time.  Otherwise the make process assumes whats there is still ok
+.PHONY: go/voltha.pb
+
 print:
 	@echo "Proto files: $(PROTO_FILES)"
 	@echo "Python PB2 files: $(PROTO_PYTHON_PB2)"