Added ETCD Metrics Dashboard to Grafana

Change-Id: I1bd9d96adce52315b6e9f3daf1d73287eba7948d
diff --git a/nem-monitoring/values.yaml b/nem-monitoring/values.yaml
index c00d3e0..6fe60a3 100644
--- a/nem-monitoring/values.yaml
+++ b/nem-monitoring/values.yaml
@@ -99,6 +99,7 @@
 
 # Configure Grafana dashboard to import
 dashboards:
+  etcd: true
   k8s: true
   nodeExporter: true
   xos: true