Add Grafana dashboard for Aether subscriber monitor

Change-Id: I60094a940d50cd617534fd12128c4c37a816b404
diff --git a/nem-monitoring/Chart.yaml b/nem-monitoring/Chart.yaml
index ceecd2a..3cd07e0 100644
--- a/nem-monitoring/Chart.yaml
+++ b/nem-monitoring/Chart.yaml
@@ -18,4 +18,4 @@
 description: Time Series Storage and Dashboard for CORD
 icon: https://guide.opencord.org/logos/cord.svg
 
-version: 1.3.3-dev
+version: 1.3.4-dev