bng.stats passed by default as topic to kpi exporter

Change-Id: I23125b595f80b411f4b1b72785c5dfe0c6864442
diff --git a/nem-monitoring/Chart.yaml b/nem-monitoring/Chart.yaml
index 62078b0..354110b 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: 1.3.11
+version: 1.3.12