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

Change-Id: I15fe9b5a185d8eb10e68f763e3a3b49d3d12a65a
diff --git a/omec/omec-user-plane/.helmignore b/omec/omec-user-plane/.helmignore
index f0c1319..549c154 100644
--- a/omec/omec-user-plane/.helmignore
+++ b/omec/omec-user-plane/.helmignore
@@ -1,3 +1,8 @@
+# SPDX-FileCopyrightText: 2020 Open Networking Foundation <info@opennetworking.org>
+#
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-License-Identifier: LicenseRef-ONF-Member-Only
+
 # Patterns to ignore when building packages.
 # This supports shell glob matching, relative path matching, and
 # negation (prefixed with !). Only one pattern per line.