Adding log in case the kafkaProducer is not defined and an event is received

Change-Id: Ic424f0b763eb8eb25d6f5781a67179ceebbe093a
diff --git a/src/main/java/org/opencord/kafka/impl/KafkaIntegration.java b/src/main/java/org/opencord/kafka/impl/KafkaIntegration.java
index d6e3392..bfc5ec9 100644
--- a/src/main/java/org/opencord/kafka/impl/KafkaIntegration.java
+++ b/src/main/java/org/opencord/kafka/impl/KafkaIntegration.java
@@ -186,6 +186,7 @@
     @Override
     public void send(String topic, JsonNode data) {
         if (kafkaProducer == null) {
+            log.warn("Not sending event as kafkaProducer is not defined: {}", data.toString());
             return;
         }