[plugin-kafka] Use default partition and timestamp for sending events

vividus-plugin-kafka/src/main/java/org/vividus/steps/kafka/KafkaSteps.java

@@ -179,7 +179,7 @@ public void sendEvent(String value, String producerKey, String topic)
  public void sendEventWithKey(String key, String value, String producerKey, String topic)
  throws InterruptedException, ExecutionException, TimeoutException
  {
- ProducerRecord record = new ProducerRecord(topic, 0, 0L, key, value,
+ ProducerRecord<String, String> record = new ProducerRecord<>(topic, null, key, value,
  testContext.remove(HEADERS_KEY));
  kafkaTemplates.get(producerKey).send(record).get(WAIT_TIMEOUT_IN_MINUTES, TimeUnit.MINUTES);
  }