undeploy: Use predictable names for removed directories
undeploy: Use predictable names for removed directories

This means if we undeploy something, but its still in use, then
we can find it later. This is interesting because it lets
us re-find it for spawning an instance of the same version.

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