Custom certificates to authenticate to internal CA

Hi,

I guess this is more a feature request. I'm signing and creating certificates for internal services. Currently it seems impossible to load custom certificates in the kiosk/browser (P12). (maybe i have missed something).

I tried adding a custom certificate to the snap /etc/ssl/.. (not on the host itself) but it seems to ignore this.

i'm now using the ignore-tls version. but this seems really needless in my case.