Simplify enabling TLS to all KAS ports

Summary

Currently we can only set up easily the TLS for the private api, through kas.privateApi.tls chart value. So, to configure TLS on other ports, we need to configure many more custom variables, as being documented in !2829 (merged).

Proposal

The proposal is to simply configure something like kas.tls.enabled: true and/or kas.internalTls.enabled: true, then automatically configure all the necessary values described in !2829 (merged).