File _service of Package ignition

<services>
  <service name="tar_scm" mode="disabled">
    <param name="version">2.20.0</param>
    <param name="revision">v2.20.0</param>
    <param name="url">https://github.com/coreos/ignition</param>
    <param name="scm">git</param>
    <param name="changesgenerate">enable</param>
  </service>
  <service name="recompress" mode="disabled">
    <param name="compression">xz</param>
    <param name="file">*.tar</param>
  </service>
  <service name="set_version" mode="disabled"/>
</services>