AETHER-513 Add grafana-aether Helm chart

Change-Id: I54b208bbbc981d2bff252ce9586d716dafb053cc
diff --git a/monitoring/grafana-aether/values.yaml b/monitoring/grafana-aether/values.yaml
new file mode 100644
index 0000000..8d1af2a
--- /dev/null
+++ b/monitoring/grafana-aether/values.yaml
@@ -0,0 +1,23 @@
+# Copyright 2020-present Open Networking Foundation
+# SPDX-License-Identifier: LicenseRef-ONF-Member-Only-1.0
+
+# Default values for grafana-aether.
+# This is a YAML-formatted file.
+# This chart loads Grafana and creates configmaps for the datasources and dashboards.
+
+nameOverride: ""
+fullnameOverride: ""
+
+# Project namespaces where Rancher's Prometheus lives.
+# Each dashboard may draw its data from a different Prometheus.
+globalStatusMonitorNamespace: ""
+
+grafana:
+  grafana.ini:
+    auth.anonymous:
+      enabled: true
+  sidecar:
+    dashboards:
+      enabled: true
+    datasources:
+      enabled: true