Adding Apache-2.0 and ONF Member licenses to aether-helm-charts

Change-Id: I15fe9b5a185d8eb10e68f763e3a3b49d3d12a65a
diff --git a/omec/omec-data-plane/.gitignore b/omec/omec-data-plane/.gitignore
index ee3892e..a24b9a1 100644
--- a/omec/omec-data-plane/.gitignore
+++ b/omec/omec-data-plane/.gitignore
@@ -1 +1,6 @@
+# SPDX-FileCopyrightText: 2020 Open Networking Foundation <info@opennetworking.org>
+#
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-License-Identifier: LicenseRef-ONF-Member-Only
+
 charts/