Resolves: rhbz#1490318 do not use versioned Supplements
It does not work if the requested version is not available anymore:
dnf update # updates libreoffice
# some time passes, a new libreoffice appears in updates
dnf install langpacks-de # doesn't install libreoffice-langpack-de
dnf remove langpacks-de
dnf update
dnf install langpacks-de # does install libreoffice-langpack-de