title: EC2 volume: how do I set it so that it WILL delete on termination?
body: <p>I have an EC2 instance that I'd like to take a snapshot of, to use as an AMI for future spot instances.
  Because of the way I created volume for this instance, it is currently set to <em>not</em> delete upon termination.<br>
  I want it <em>to</em> delete on termination, so that I can use it for spot instances and not have residual volumes hanging around needing manual deletion.  </p>
  
  <p>I've combed AWS manual, stack exchange, google, etc and I can only find references to a 'delete on termination' flag, but no explanation of how to use it.  </p>