Logging improvement for VGC-APPLICATION

Change-Id: I35c10b43917d5f962484f05c3fb9d9aad67e63f5
diff --git a/internal/pkg/application/util.go b/internal/pkg/application/util.go
index f157bf9..0fb5313 100644
--- a/internal/pkg/application/util.go
+++ b/internal/pkg/application/util.go
@@ -18,6 +18,7 @@
 import (
 	"errors"
 	"strconv"
+	"voltha-go-controller/log"
 
 	"github.com/google/gopacket/layers"
 )
@@ -35,6 +36,7 @@
 
 // GetMetadataForL2Protocol - returns metadata value for provide ethertype
 func GetMetadataForL2Protocol(etherType layers.EthernetType) (uint8, error) {
+	logger.Debugw(ctx, " GetMetadataForL2Protocol", log.Fields{"EtherType ": etherType})
 	switch etherType {
 	case layers.EthernetTypeDot1Q:
 		return EtherType8100, nil