File _patchinfo of Package patchinfo.23918

<patchinfo incident="23918">
  <packager>favogt</packager>
  <rating>moderate</rating>
  <category>recommended</category>
  <summary>Recommended update for sles15-image</summary>
  <description>This update for sles15-image fixes the following issues:

- Add zypper explicitly to work around obs-build bug (gh#openSUSE/obs-build#562)
- Add com.suse.supportlevel label (jsc#BCI-40)
</description>
</patchinfo>