Add LICENSE file

Change-Id: I7dd5f33e252f21ce8b4ce84653a032a2a651e0fa
diff --git a/.gitignore b/.gitignore
index bf0e1ea..a6dc57c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,8 @@
+#
+# SPDX-FileCopyrightText: 2022-present Intel Corporation
+# SPDX-FileCopyrightText: 2020-present Open Networking Foundation <info@opennetworking.org>
+# SPDX-License-Identifier: Apache-2.0
+#
 __pycache__/
 *.py[cod]
 *$py.class