File _service of Package slurm

<services>
  <service name="download_url">
    <param name="host">download.schedmd.com</param>
    <param name="protocol">https</param>
    <param name="path">/slurm/slurm-17.02.9.tar.bz2</param>
  </service>
  <service name="extract_file">
    <param name="archive">_service:download_url:slurm-17.02.9.tar.bz2</param>
    <param name="files">slurm-17.02.9/slurm.spec</param>
  </service>
</services>