title: Kafka-Zookeeper Authentication without SASL
body: <p>I am trying to enable SASL_PLAINTEXT authentication between Kafka broker and client, while not requiring it between Kafka and Zookeeper. Currently I am using confluent offering of Kafka, with CDH Zookeeper. Is there a way to pass in a flag to disable SASL for Kafka &lt;-&gt; Zookeeper?</p>