Change license from ONF-Member-Only to Apache-2.0

Change-Id: I031b31427f78d0c238342124638327fcc933ea29
diff --git a/di-metrics-exporter/values.yaml b/di-metrics-exporter/values.yaml
index 2628b10..fbbfe84 100644
--- a/di-metrics-exporter/values.yaml
+++ b/di-metrics-exporter/values.yaml
@@ -1,5 +1,5 @@
 # SPDX-FileCopyrightText: 2022-present Open Networking Foundation <info@opennetworking.org>
-# SPDX-License-Identifier: LicenseRef-ONF-Member-Only-1.0
+# SPDX-License-Identifier: Apache-2.0
 name: di-metrics-exporter
 image:
   repository: registry.opennetworking.org/deepinsight/utility