tests: Check that removing D-Bus access works
tests: Check that removing D-Bus access works

Test that =none entries make it into the overrides file.

Closes: #2818
Approved by: alexlarsson

matthiasclasen/flatpak,matthiasclasen/flatpak,matthiasclasen/flatpak,flatpak/flatpak,flatpak/flatpak,matthiasclasen/flatpak,flatpak/flatpak,matthiasclasen/flatpak,flatpak/flatpak,flatpak/flatpak