File _servicedata of Package ignition-dracut

<servicedata>
  <service name="tar_scm">
    <param name="url">git://github.com/coreos/ignition-dracut.git</param>
    <param name="changesrevision">7ff38d9716bf982e3f6495d85c6ce91aab72e88d</param>
 </service>
</servicedata>