20.xx: postponse LuCI HTTPS per default

[Paul Spooren]

Hi,

The current list of release goals for 20.xx states[0] that LuCI should
use HTTPS per default. This works by creating on-device a self-signed
certificate. Self-signed certificates result in warnings and may cause
more harm than good, multiple discussion are found in the mail archive.

As no clean solution seems in reach while 20.xx seems close, I'd like to
suggest to postponse HTTPS LuCI (`luci-ssl` vs `luci`) per default.

This isn't a vote but a request for developer/user opinions.

Sunshine,
Paul

[0]: https://openwrt.org/docs/guide-developer/releases/goals/20.xx