dbus: Add ResetTrackingId method
dbus: Add ResetTrackingId method

We'll need this in order to reset the machine-id safely later

https://phabricator.endlessm.com/T18983

endlessm/eos-metrics,endlessm/eos-metrics,endlessm/eos-metrics,endlessm/eos-metrics,endlessm/eos-metrics,endlessm/eos-metrics