title: Storm-Kafka spout not creating node in zookeeper cluster.
body: <p>I am usign storm 0.10 and kafka 0.9.0.0 with storm-kafka. Whenever I am running my topology on cluster it starts reading from beginning although I am giving zkRoot and consumer groupId from properties file as -</p>
  
  <pre><code>kafka.zkHosts=myserver.myhost.com:2181
  kafka.topic=onboarding-mail-topic
  kafka.zkRoot=/kafka-storm
  kafka.group.id=onboarding
  </code></pre>
  
  <p>Spout: </p>
  
  <pre><code>BrokerHosts zkHosts = new ZkHosts(prop.getProperty("kafka.zkHosts"));
                      String topicName = prop.getProperty("kafka.topic");
                      String zkRoot = prop.getProperty("kafka.zkRoot");
                      String groupId = prop.getProperty("kafka.group.id");
  
                      //kafka spout conf
                      SpoutConfig kafkaConfig = new SpoutConfig(zkHosts, topicName, zkRoot, groupId);
  
                      kafkaConfig.scheme = new SchemeAsMultiScheme(new StringScheme());
  
                      KafkaSpout kafkaSpout = new KafkaSpout(kafkaConfig);
  </code></pre>
  
  <p>When I check zookeeper <code>ls /</code> it doesn't show me <code>kafka-storm</code></p>
  
  <pre><code>[controller_epoch, controller, brokers, storm, zookeeper, kafka-manager, admin, isr_change_notification, consumers, config]
  </code></pre>