EAP-TLS extend logged lines

[Alexey D. Filimonov]

Hello.

Currently I have EAP-TLS auth.
On successfull auth, it logs

     ```
     Wed Feb 19 15:23:13 2025 : Auth: (9) Login OK: [anonymous-xxx] 
(from client name_of_client1 port 8 cli ee:ee:ee:ed:ae:ee)
     ```


I'd like to extend or replace this line with UPN from certiificate and 
other attributes.

Where should I start from ?