Switch from member-only license to apache

Change-Id: I7661615a85e60c2aaae1d4b317e28448fda061b7
diff --git a/apps/dbuf/templates/_helpers.tpl b/apps/dbuf/templates/_helpers.tpl
index b8b672a..6143765 100644
--- a/apps/dbuf/templates/_helpers.tpl
+++ b/apps/dbuf/templates/_helpers.tpl
@@ -1,6 +1,6 @@
 {{/*
 Copyright 2020-present Open Networking Foundation
-SPDX-License-Identifier: LicenseRef-ONF-Member-Only-1.0
+SPDX-License-Identifier: Apache-2.0
 */}}
 
 {{- define "extraParams" -}}