File _service:obs_scm:_servicedata of Package obs-service-download_files

<servicedata>
<service name="tar_scm">
                <param name="url">https://github.com/openSUSE/obs-service-download_files.git</param>
              <param name="changesrevision">665e7eb794e898eafe2e30636917aaa36732eb48</param></service></servicedata>