File _patchinfo of Package patchinfo.1742

<patchinfo incident="1742">
  <issue id="958880" tracker="bnc">Two service files still missing - question on the reason for this ...</issue>
  <category>recommended</category>
  <rating>low</rating>
  <packager>eeich</packager>
  <description>
This update for systemd-presets-branding-SLE fixes the following issues:

- Add display-manager.service to defaults presets. (bsc#958880)
</description>
  <summary>Recommended update for systemd-presets-branding-SLE</summary>
</patchinfo>