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

Change-Id: I9de8accd128f23ef9d1a363a3b2038e5076826f9
diff --git a/go.mod b/go.mod
index c302e8b..e8e0e4a 100644
--- a/go.mod
+++ b/go.mod
@@ -7,7 +7,7 @@
 	github.com/golang/protobuf v1.3.2
 	github.com/onsi/ginkgo v1.8.0 // indirect
 	github.com/onsi/gomega v1.5.0 // indirect
-	github.com/opencord/voltha-lib-go v0.0.0-20191024175357-456b893dc42c
+	github.com/opencord/voltha-lib-go/v2 v2.2.7
 	github.com/opencord/voltha-protos v1.0.3
 	go.etcd.io/etcd v0.0.0-20190930204107-236ac2a90522
 	google.golang.org/grpc v1.24.0