when loading a prior_signed_voucher_request without key validation, keep the object that can do the validation around so that verify_with_key() can validate it when a key has been matched up
when loading a prior_signed_voucher_request without key validation, keep the object
that can do the validation around so that verify_with_key() can validate it when a key has
been matched up

mcr/ChariWTs,mcr/ChariWTs,mcr/ChariWTs