Fall back to /var/lib/dbus/machine-id when required
Fall back to /var/lib/dbus/machine-id when required

Fixes https://github.com/fwupd/fwupd/issues/1365

fwupd/fwupd,hughsie/fwupd,fwupd/fwupd,hughsie/fwupd,fwupd/fwupd,hughsie/fwupd,fwupd/fwupd,hughsie/fwupd