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/OpenstackTelemetryManager.java b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/OpenstackTelemetryManager.java
index da492a9..f3f386f 100644
--- a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/OpenstackTelemetryManager.java
+++ b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/OpenstackTelemetryManager.java
@@ -36,6 +36,9 @@
 import java.util.List;
 import java.util.Set;
 
+import static org.onosproject.openstacktelemetry.codec.TinaMessageByteBufferCodec.KAFKA_KEY;
+import static org.onosproject.openstacktelemetry.codec.TinaMessageByteBufferCodec.KAFKA_TOPIC;
+
 /**
  * Openstack telemetry manager.
  */
@@ -45,9 +48,6 @@
 
     private final Logger log = LoggerFactory.getLogger(getClass());
 
-    private static final String KAFKA_TOPIC = "sona.flow";
-    private static final String KAFKA_KEY = "flowdata";
-
     private List<TelemetryService> telemetryServices = Lists.newArrayList();
 
     @Activate
@@ -89,6 +89,8 @@
             if (service instanceof RestTelemetryManager) {
                 invokeRestPublisher((RestTelemetryService) service, flowInfos);
             }
+
+            log.trace("Publishing Flow Infos {}", flowInfos);
         });
     }