Change the type of all fields for identifier of the container owner to
refs.OwnerID. This will allow you to follow a single format and not duplicate
its description.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
This commit:
* moves Token message to service package;
* updates token structure (new verb field, some renaming);
* replaces VerificationHeader header with Token in object package;
* removes no longer used VerificationHeader message.
