Changing use of LOCAL_PROTOS and LOCAL_PYVOLTHA to match other repos

Change-Id: Ia44aad5446f0508ff56177e5cd78c017503da73c
diff --git a/python/Makefile b/python/Makefile
index 2a86247..98005d2 100644
--- a/python/Makefile
+++ b/python/Makefile
@@ -65,14 +65,14 @@
 	mkdir -p local_imports
 ifdef LOCAL_PROTOS
 	mkdir -p local_imports/voltha-protos/dist
-	cp ../../voltha-protos/dist/*.tar.gz local_imports/voltha-protos/dist/
+	cp ${LOCAL_PROTOS}/dist/*.tar.gz local_imports/voltha-protos/dist/
 endif
 
 local-pyvoltha:
 	mkdir -p local_imports
 ifdef LOCAL_PYVOLTHA
 	mkdir -p local_imports/pyvoltha/dist
-	cp ../../pyvoltha/dist/*.tar.gz local_imports/pyvoltha/dist/
+	cp ${LOCAL_PYVOLTHA}/dist/*.tar.gz local_imports/pyvoltha/dist/
 endif
 
 docker-build: local-protos local-pyvoltha