Support to publish port TX and RX stats in openstacktelemetry

Change-Id: I368fb676e4817cd01e5782a3b37170e2b9a5c6bd
diff --git a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/KafkaTelemetryManager.java b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/KafkaTelemetryManager.java
index d1de54a..56a0e81 100644
--- a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/KafkaTelemetryManager.java
+++ b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/KafkaTelemetryManager.java
@@ -124,7 +124,7 @@
     public Future<RecordMetadata> publish(ProducerRecord<String, byte[]> record) {
 
         if (producer == null) {
-            log.warn("Kafka telemetry service has not been enabled!");
+            log.debug("Kafka telemetry service has not been enabled!");
             return null;
         }