[gnome-software: 5/5] Merge branch 'upgrade-background' into 'main'

[Milan Crha <mcrha src gnome org>]

commit 8c5be3d87c37797feafa3a5b6fba33dc865b5aa3
Merge: 02b83f97d c230156c6
Author: Milan Crha <mcrha redhat com>
Date:   Tue Feb 8 09:18:59 2022 +0000

    Merge branch 'upgrade-background' into 'main'
    
    plugins: Find upgrade background images from new well-known locations
    
    See merge request GNOME/gnome-software!1189

 NEWS                                               |  10 +++
 data/assets/meson.build                            |   6 --
 data/assets/upgrade-bg.png                         | Bin 17507 -> 0 bytes
 data/org.gnome.software.gschema.xml                |   5 --
 doc/vendor-customisation.md                        |  71 +++++++++++++++++++++
 lib/gs-utils.c                                     |  40 ++++++++++++
 lib/gs-utils.h                                     |   2 +
 plugins/dummy/gs-plugin-dummy.c                    |  17 +++--
 plugins/eos-updater/gs-plugin-eos-updater.c        |  13 +++-
 .../gs-plugin-fedora-pkgdb-collections.c           |  37 ++---------
 10 files changed, 152 insertions(+), 49 deletions(-)
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