ci: Use shorter job names
ci: Use shorter job names

Job names in gitlab pipeline view gets truncated to  "fedora-meson-..."
for all jobs which is not really useful. All our CIs are using Meson,
and the host distro is not relevant when doing cross builds.

endlessm/glib,endlessm/glib,endlessm/glib,endlessm/glib,endlessm/glib