File _service of Package qt-creator

<services>
  <service name="download_url">
    <param name="host">ftp.jaist.ac.jp</param>
    <param name="protocol">https</param>
    <param name="path">/pub/qtproject/official_releases/qtcreator/18.0/18.0.2/qt-creator-opensource-src-18.0.2.tar.xz</param>
  </service>
</services>