Logging improvement for VGC-ONOS-NBI

Change-Id: I08f41ce4b5895ce5facb9419085c9587c7168ccd
diff --git a/voltha-go-controller/onos_nbi/models.go b/voltha-go-controller/onos_nbi/models.go
index cc4bed0..0b7ebff 100644
--- a/voltha-go-controller/onos_nbi/models.go
+++ b/voltha-go-controller/onos_nbi/models.go
@@ -792,7 +792,7 @@
 	return port
 }
 func (gh *GroupsHandle) convertGroupsToOnosGroup(groupsInfo *of.Group) *GroupsInfo {
-	logger.Info(ctx, "Entering into convertGroupsToOnosGroup")
+	logger.Debug(ctx, "Entering into convertGroupsToOnosGroup")
 	var groups *GroupsInfo
 	var bucket []Bucket
 	Instruction := []Instructions{}