move package to v2 version as per go requirements after update to version 2.0

Change-Id: Iac4cc56f014f49e7d241357f8b7a5f4f3047bedc
diff --git a/layers.go b/layers.go
index d7904ad..19a673e 100644
--- a/layers.go
+++ b/layers.go
@@ -20,7 +20,7 @@
 import (
 	"errors"
 	"github.com/google/gopacket"
-	me "github.com/opencord/omci-lib-go/generated"
+	me "github.com/opencord/omci-lib-go/v2/generated"
 )
 
 var nextLayerMapping map[MessageType]gopacket.LayerType