Comment 3 for bug 1794270

> I think the way of exabgp logger is kind of weird though, maybe we networking-bagpipe should follow it.

Feel free to make practical proposals.
My current stand was: in networking-bagpipe, we want everything logged through oslo_log for consistency, so we need to bypass the specific exabgp logging.

I'll also try to dig more why the current code is not actually controlling the exabgp log level.