title: in Ansible, How can I set log file name dynamilcally
body: <p>I'm currently developing ansible script to build and deploy java project.</p>
  
  <p>so, I can set the log_path like below</p>
  
  <pre><code>log_path=/var/log/ansible.log
  </code></pre>
  
  <p>but, It is hard to look up build history.
  Is it possible to append datetime to log file name?</p>
  
  <p>for example,</p>
  
  <p>ansible.20150326145515.log</p>