title: Yarn tracking url contains hostname, not ip
body: <p>GetYarnApplicationResponse.YarnApplication.trackingUrl contains hostname, like </p>
  
  <pre><code>http://host54:5004/proxy/application_1522639467333_22/
  </code></pre>
  
  <p>I would like it to return ip and not a hostname, like</p>
  
  <pre><code>http://10.32.12.1:5004/proxy/application_1522639467333_22/`.
  </code></pre>
  
  <p>What should I do?</p>