public KafkaSystemDescriptor withConsumerZkConnect(List<String> consumerZkConnect) {
    this.consumerZkConnect = consumerZkConnect;
    return this;
  }
The hostname and port of one or more Zookeeper nodes where information about the Kafka cluster can be found.
This is given as a list of hostname:port pairs, such as
{@code ImmutableList.of("zk1.example.com:2181", "zk2.example.com:2181", "zk3.example.com:2181")}.
If the cluster information is at some sub-path of the Zookeeper namespace, you need to include the path at the
end of the list of hostnames, for example:
{@code ImmutableList.of("zk1.example.com:2181", "zk2.example.com:2181/clusters/my-kafka")}.

@param consumerZkConnect Zookeeper connection information for the system
@return this system descriptor
samza-kafka/src/main/java/org/apache/samza/system/kafka/descriptors/KafkaSystemDescriptor.java