Fix license headers

Change-Id: Ia82a0ee8437b527daa9ab95a8873b6e17b648eb2
diff --git a/network-diag-app.py b/network-diag-app.py
index a8f414c..86d564f 100644
--- a/network-diag-app.py
+++ b/network-diag-app.py
@@ -1,7 +1,7 @@
 """
-SPDX-FileCopyrightText: 2020-present Intel Corporation
+SPDX-FileCopyrightText: 2022-present Intel Corporation
 SPDX-FileCopyrightText: 2020-present Open Networking Foundation <info@opennetworking.org>
-SPDX-License-Identifier: LicenseRef-ONF-Member-1.01
+SPDX-License-Identifier: Apache-2.0
 """
 import sys
 import os