VOL-2138 Use v2 import paths for voltha-lib-go

Change-Id: I14e7b80f27c36c51759429299a9b6769ad982014
diff --git a/go.mod b/go.mod
index 7b96628..434905d 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,8 @@
 
 require (
 	github.com/gogo/protobuf v1.3.0
-	github.com/opencord/voltha-lib-go v0.0.0-20191023185531-80258b36a64b
+	github.com/opencord/voltha-lib-go/v2 v2.2.7
+
 	github.com/opencord/voltha-protos v1.0.3
 	github.com/stretchr/testify v1.4.0
 )