Enable not rebooting during default encryption

Need to not set this property) during mount, since it can't
be changed later (ro property)

Also no reason to start class main on encryption cycle - we'll
show surfaceflinger, which is enough UI for this short cycle.

Bug: 17041092
Change-Id: Ica5339c54e45716d0fe20e23c0ab857f388d23ed
2 files changed