On Ubuntu, dconf profiles `gdm` and `user` are not explictly
configured by default. When the profiles aren't explicitly
defined and don't point to `gdm.d` and `local.d` dconf databases,
respectively, the remediations from dconf rules will have no affect
on gnome settings and the checks will give false positives.

The rules that are affected on Ubuntu:
- dconf_gnome_banner_enabled
- dconf_gnome_disable_automount
- dconf_gnome_disable_automount_open
- dconf_gnome_disable_autorun
- dconf_gnome_disable_ctrlaltdel_reboot
- dconf_gnome_disable_user_list
- dconf_gnome_login_banner_text
- dconf_gnome_screensaver_idle_delay
- dconf_gnome_screensaver_lock_delay
- dconf_gnome_screensaver_lock_enabled