title: kafka broker config change dynamically
body: <p>I'm using kafka_2.9.2-0.8.1.1 with zookeeper 3.4.6.</p>
  
  <p>Is there a way to change broker configuration settings dynamically? Specifically, I want to change <code>controlled.shutdown.enable</code></p>
  
  <p><code>bin/kafka-topics.sh --zookeeper zookeeper01.mysite.com --config controlled.shutdown.enable=true --alter</code></p>
  
  <p>but I get the error</p>
  
  <p><code>Missing required argument "[topic]"</code></p>