Switch the default of EnumerateAllDevices to false
Switch the default of EnumerateAllDevices to false

This was causing dozens of regressions to be reported.

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