File _link of Package python-keystoneclient

<link project="openSUSE:Factory" package="python-keystoneclient" baserev="b775f2beaa80443ee708b2a0e39efd9c">
  <patches>
    <delete name="python-keystoneclient-5.5.0.tar.gz"/>
    <apply name="project.diff"/>
  </patches>
</link>