VOL-2138 move to v2 imports

Change-Id: I90ddee93438532aae9ea9dbc445b7e034d28c56a
diff --git a/go.mod b/go.mod
index 2d14c99..e8f841d 100644
--- a/go.mod
+++ b/go.mod
@@ -1,4 +1,4 @@
-module github.com/opencord/voltha-lib-go
+module github.com/opencord/voltha-lib-go/v2
 
 go 1.12