[desktop] Update logging configuration

HUE like to log everything.
It's good for debug and bad for production.

I would like to have an opportunity to change logging level. Right now my log file is filled with access[INFO] and thrift_util[DEBUG] messages.

I've tried such conf for hue safety valve:

handlers=accesslog
qualname=access

[handler_accesslog]
class=logging.NullHandler
level=WARNING

It doesn't work. I still see access[INFO] in log.
Is it a bug or I do something wrong?

I did restart hue server role and the whole hue service.