[New: openFATE 324570] make GDM blackground image configurable

Feature added by: Ludwig Nussel (lnussel) Feature #324570, revision 1 Title: make GDM blackground image configurable Requested by: Ludwig Nussel (lnussel) Requested by: Ludwig Nussel (lnussel) Partner organization: openSUSE.org Description: GDM only has very limited theming posibilites. To change the actual wallpaper one has to modify a binary file a rather nasty and not upgradable way: https://wiki.archlinux.org/index.php/GDM#Log-in_screen_background_image Please implement some more convenient way to allow custom deployments to override the wallpaper in GDM. -- openSUSE Feature: https://features.opensuse.org/324570