DNS setup for library sites

When going live with a library site, DNS needs to be updated. Update all domain names configured on the site to the IP/name documented in Current Platform environments.

A records should point to 20.86.109.250

CNAME records should point to cluster-1.folkebibliotekernescms.dk

If any of the domains have CAA records, they should be updated according to ZeroSSL's guide.

This is documented for the library staff in the end user documentation.