SEBA-772 Use voltha_kpi_broker value for kafka host

Change-Id: Ia171de80ef9cb95c6694b2685b525607c40e04e8
diff --git a/nem-monitoring/templates/exporter-configmap.yaml b/nem-monitoring/templates/exporter-configmap.yaml
index 4707e31..69d2ae3 100644
--- a/nem-monitoring/templates/exporter-configmap.yaml
+++ b/nem-monitoring/templates/exporter-configmap.yaml
@@ -4,4 +4,4 @@
   name: exporter-configmap
 data:
   conf.yaml: |
-{{ .Files.Get "exporter-config/conf.yaml" | indent 4 }}
+{{ include "exporter.config" . | indent 4 }}