VOL-3735 Retrieve port counters using the GetExtValue(SingleGetValue) rpc from the openolt adapter

Change-Id: I6bce9eb07396fb84e6733beeb81341080243e7a5
diff --git a/Makefile b/Makefile
index 2fef77a..93e34ae 100644
--- a/Makefile
+++ b/Makefile
@@ -67,8 +67,8 @@
 ## Local Development Helpers
 local-lib-go:
 ifdef LOCAL_LIB_GO
-	mkdir -p vendor/github.com/opencord/voltha-lib-go/v3/pkg
-	cp -r ${LOCAL_LIB_GO}/pkg/* vendor/github.com/opencord/voltha-lib-go/v3/pkg/
+	mkdir -p vendor/github.com/opencord/voltha-lib-go/v4/pkg
+	cp -r ${LOCAL_LIB_GO}/pkg/* vendor/github.com/opencord/voltha-lib-go/v4/pkg/
 endif
 
 build: local-lib-go