Example config iceberg with kerberized HMS backend

Hi,
Is there an example config avalable for kerberized HMS parameters?

I am using the `apache/gravitino` Docker image.

On trial and error i seem to be getting errors mainly because i may be inputing them incorrectly.

https://gravitino.apache.org/docs/0.8.0-incubating/lakehouse-iceberg-catalog
Eg:- what is an example of `authentication.kerberos.principal` ? (is it the client or server principal here and in what entry format?)

Also, the WebUI has a different parameter as opposed to the .conf file.
Eg:- `authType` in the WebUI as opposed to `authentication.type`.

Was hoping for examples for each route (.conf vs WebUI).

Thanks in advance!

Start with the linked Iceberg catalog documentation and compare the WebUI's authType with the .conf file's authentication.type. Document representative kerberized HMS parameters, including the principal format, for both configuration routes.

Written by the indexing model from the issue text.