VOL-2509 - upodate to use v3 protobufs

Change-Id: Ie42573675d7ef6c58757933023943ee133aaf3aa
diff --git a/internal/pkg/openflow/echo.go b/internal/pkg/openflow/echo.go
index d773c70..bb166fa 100644
--- a/internal/pkg/openflow/echo.go
+++ b/internal/pkg/openflow/echo.go
@@ -19,7 +19,7 @@
 import (
 	"encoding/json"
 	ofp "github.com/donNewtonAlpha/goloxi/of13"
-	"github.com/opencord/voltha-lib-go/v2/pkg/log"
+	"github.com/opencord/voltha-lib-go/v3/pkg/log"
 )
 
 func (ofc *OFClient) handleEchoRequest(request *ofp.EchoRequest) {