Code review comment for lp:~brian-murray/software-properties/more-restart

I disagree with the changes being made here because one or more of these packages could be installed at the same time; each desktop environment should use the reboot tool that corresponds to the one they're currently on ($XDG_CURRENT_DESKTOP).

While you're at it, if you're adding support for Lubuntu, please add support for LXQt too, which can be called via `lxqt-leave --reboot`.

Thanks!