title: Don't print the kafka-console-consumer warnings
body: <p>I am trying to debug encrypted messages onto a Kafka cluster. Obviously these messages are full of non printable characters and are not usable on a console, so I wanted to save the output in a file like this:</p>
  
  <pre><code>kafka-console-consumer \
      --zookeeper 0.zookeeper.local,1.zookeeper.local \
      --max-messages 1 \
      --topic MYTOPIC &gt; /tmp/message
  </code></pre>
  
  <p>I am unable to decrypt the resulting message, because the output contains, along with the ciphertext, warning messages such as:</p>
  
  <pre><code>[2016-02-24 11:52:47,488] WARN Reconnect due to socket error: null (kafka.consumer.SimpleConsumer)
  </code></pre>
  
  <p>Is there a way to get one single message in a file and <strong>NOT</strong> embed the warnings in that file?</p>