Moving monitoring to use cord-kafka

Change-Id: Ibdbfa53e4bca5026881846d8e3a52752abf43094
diff --git a/nem-monitoring/values.yaml b/nem-monitoring/values.yaml
index da05bc3..b103d46 100644
--- a/nem-monitoring/values.yaml
+++ b/nem-monitoring/values.yaml
@@ -17,7 +17,7 @@
 nem_voltha_kpi_exporter_nodePort: 31080
 imagePullPolicy: "Always"
 args:
-  voltha_kpi_broker: voltha-kafka:9092
+  voltha_kpi_broker: cord-kafka:9092
   voltha_kpi_topic: voltha.kpis
 
 prometheus: