Currently the wiping (and reset) is done by wipe-in-place, calling clobber-state.

However, clobber-state may have many extra unexpected dependency and changes randomly.

Currently, clobber-state does these:
 - ensure root account (we don't need)
 - redirect logs (we don't need)
 - preserve files (we need but this can be done in other ways)
 - detect system config (mainly for NAND and rotational devices, but since no projects are going NAND/rotational maybe we can skip this)
 - wipe stateful by dd (we can do this)
 - create new file system (we have to clone this)
 - mount and restore CRX cache (need to do this)
 - tag developer mode flags (probably need)
 - remove VPD keys (we can do this in factory)

Maybe we should just do the clobbering (since what we need is slightly different from what clobber-state usually needs) inside factory script, that may include:

 - Stop using display_boot_message and other functions that needs fonts & graphics
 - Invoke frecon only one time and use its OSC (Escape code) to display images if needed, or do pure text UI
 - Also change cutoff scripts to take advantage of the frecon / text UI.