SEBA-599 Kafka topic exporter port_id

This is a rebase and squash of patchsets 16737 and 16566

Change-Id: I772e3da35d6d2fd87d5b1d2b307cd08ddf69153e
diff --git a/config/conf.yaml b/config/conf.yaml
index 633273a..398e4f2 100644
--- a/config/conf.yaml
+++ b/config/conf.yaml
@@ -4,10 +4,11 @@
   host: cord-kafka.default.svc.cluster.local:9092
   description: The kafka broker
   topics:
-    - voltha.kpis
+    - importer
     - onos.kpis
     - onos.aaa.stats.kpis
     - bng.stats
+    - voltha.kpis
 logger:
   loglevel: debug
   host: cord-kafka.default.svc.cluster.local:9092