Add improved SD-CORE Dashboard

Change-Id: I9dc26c7f11f8817218f85b7c8dd9fc5e0cf62c3f
diff --git a/monitoring/grafana-aether/dashboards/sdcore-dashboard.json.license b/monitoring/grafana-aether/dashboards/sdcore-dashboard.json.license
new file mode 100644
index 0000000..c522327
--- /dev/null
+++ b/monitoring/grafana-aether/dashboards/sdcore-dashboard.json.license
@@ -0,0 +1,2 @@
+Copyright 2020-present Open Networking Foundation
+SPDX-License-Identifier: LicenseRef-ONF-Member-Only-1.0