auth: add-autoprimary doesn't normalize FQDNs

[sdomi]

• This is not a support question, I have read about opensource and will send support questions to the IRC channel, GitHub Discussions or the mailing list.
• I have read and understood the 'out in the open' support policy
• I have read and understood the PowerDNS AI policy

• Program: Authoritative
• Issue type: Bug report

Short description

pdnsutil add-autoprimary accepts a hostname string, but doesn't normalize the FQDN for the trailing canonical dot. If the entry is added with the trailing dot, later replications will get rejected.

Environment

• Operating system: Alpine Linux edge
• Software version: 5.0.2
• Software source: alpine repo

Expected behaviour

Warning/error on add-autoprimary with a bad domain name, or silently normalizing the name on entry to the database sounds like the least cursed option to me.

Other information

[Habbie]

the AutoPrimary struct is just a bunch of strings. We can probably do better there and then the rest will almost automatically fall in line. Need to check that we get it right for existing database contents