Slight modification to message format for auth messages

Change-Id: If015b5d94a988c50d40f3b6686f07fdaeb2ac94e
diff --git a/src/main/java/org/opencord/kafka/integrations/AaaKafkaIntegration.java b/src/main/java/org/opencord/kafka/integrations/AaaKafkaIntegration.java
index 2393b73..471792f 100644
--- a/src/main/java/org/opencord/kafka/integrations/AaaKafkaIntegration.java
+++ b/src/main/java/org/opencord/kafka/integrations/AaaKafkaIntegration.java
@@ -49,9 +49,9 @@
 
     private static final String TOPIC = "authentication.events";
 
-    private static final String DEVICE_ID = "device_id";
-    private static final String PORT_NUMBER = "port_number";
-    private static final String AUTHENTICATION_STATE = "authentication_state";
+    private static final String DEVICE_ID = "deviceId";
+    private static final String PORT_NUMBER = "portNumber";
+    private static final String AUTHENTICATION_STATE = "authenticationState";
 
     @Activate
     public void activate() {