Added ETCD Metrics Dashboard to Grafana

Change-Id: I1bd9d96adce52315b6e9f3daf1d73287eba7948d
diff --git a/nem-monitoring/templates/grafana-dashboard-configmap.yaml b/nem-monitoring/templates/grafana-dashboard-configmap.yaml
index 6203306..bde96df 100644
--- a/nem-monitoring/templates/grafana-dashboard-configmap.yaml
+++ b/nem-monitoring/templates/grafana-dashboard-configmap.yaml
@@ -20,6 +20,10 @@
   labels:
      grafana_dashboard: "1"
 data:
+{{- if .Values.dashboards.etcd }}
+  etcd.json: |
+{{ .Files.Get "grafana-dashboards/etcd-metrics.json" | indent 4 }}
+{{- end }}
 {{- if .Values.dashboards.k8s }}
   k8s.json: |
 {{ .Files.Get "grafana-dashboards/k8s-app-metrics.json" | indent 4 }}