Added BNG dashboard, disabled by default

Also, added BNG topic and dashboard activation in seba-ponsim-sdbng.yaml values file.

Change-Id: Ic188e7504d97681f4a96bd7e68acd0de3d874cbd
diff --git a/configs/seba-ponsim-sdbng.yaml b/configs/seba-ponsim-sdbng.yaml
index 0bf332b..d1dd453 100644
--- a/configs/seba-ponsim-sdbng.yaml
+++ b/configs/seba-ponsim-sdbng.yaml
@@ -23,10 +23,24 @@
   mininet:
     repository: 'opencord/mn-stratum-siab'
     tag: 'master'
+  kpi_exporter:
+    # TODO: remove then this docker container is released ((update the value definition in nem-monitoring)
+    repository: 'opencord/kafka-topic-exporter'
+    tag: 'latest'
 
 # Select DT-Workflow
 workflow: dt-workflow
 
+# Activate BNG dashboard
+kpi_exporter:
+  topics:
+    - voltha.kpis
+    - onos.kpis
+    - bng.stats
+dashboards:
+  bng: true
+  aaa: false
+
 # In mininet chart
 # FIXME: check if multicast is working
 enableMulticast: false