Aether-3088 change license to Apache-2.0

Change-Id: I42d7535e82065a8031119bee17594d3fb358a1e5
diff --git a/config-models/plproxy-1.x/templates/_helpers.tpl b/config-models/plproxy-1.x/templates/_helpers.tpl
index 3370042..4b28369 100755
--- a/config-models/plproxy-1.x/templates/_helpers.tpl
+++ b/config-models/plproxy-1.x/templates/_helpers.tpl
@@ -1,6 +1,6 @@
 // SPDX-FileCopyrightText: 2021 Open Networking Foundation
 //
-// SPDX-License-Identifier: LicenseRef-ONF-Member-Only-1.0
+// SPDX-License-Identifier: Apache-2.0
 
 {{/* vim: set filetype=mustache: */}}
 {{/*