[Pdns-users] API does not allow AXFR TSIG keys to be set

[Kevin P. Fleming]

While working on my Ansible modules, I found that the API does not
allow the AXFR-MASTER-TSIG and TSIG-ALLOW-AXFR metadata kinds to be
set, although they can be read.

They can be updated on-the-fly (without a server restart) by pdnsutil,
which updates the backend rows directly.

I assume there is a specific reason why the API disallows edits to
them, is that documented anywhere?