CDD: Allow escrow keys to unlock CE storage.

- Much of the purpose of escrow keys is to allow storage
  to be unlocked when a user forgets their LSKF, so we
  must allow this in CDD.

Bug: 111561428
Test: Documentation change.
Change-Id: I0de44228e35728713405a8d84ec3b8e6f8a9ecbf
1 file changed