Increasingly certificates seem to have special things in the subjectAltName that have arbitrary strings in them. E.g. some (now) common in EU export certificates and, for a few years now, certificates issued to medical doctors (in for example the netherlands, the full spec is https://www.uziregister.nl/Media/Default/PDF/20200325%20CA%20model%20pasmodel%20certificaatprofielen%20v10_0.pdf, section 4.8, page 16 for an example of one country). Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org> Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com> (Merged from https://github.com/openssl/openssl/pull/11599)
