AETHER-513 Add grafana-aether Helm chart

Change-Id: I54b208bbbc981d2bff252ce9586d716dafb053cc
diff --git a/monitoring/grafana-aether/templates/datasource-configmap.yaml b/monitoring/grafana-aether/templates/datasource-configmap.yaml
new file mode 100644
index 0000000..da039de
--- /dev/null
+++ b/monitoring/grafana-aether/templates/datasource-configmap.yaml
@@ -0,0 +1,23 @@
+# Copyright 2020-present Open Networking Foundation
+# SPDX-License-Identifier: LicenseRef-ONF-Member-Only-1.0
+
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ .Release.Name }}-datasource
+  labels:
+     grafana_datasource: "1"
+data:
+  datasources.yaml: |-
+    apiVersion: 1
+
+    datasources:
+{{ if .Values.globalStatusMonitorNamespace }}
+    - name: RANCHER_MONITORING_GLOBAL
+      type: prometheus
+      access: proxy
+      basicAuth: false
+      editable: false
+      isDefault: true
+      url: http://access-prometheus.{{.Values.globalStatusMonitorNamespace}}:80
+{{ end }}