Turn off by default logging from Honeypot as a Service

When I have enabled HaaS on branch HBL, I noticed time to time these rows:

Mar  9 09:52:25 turris haas-proxy-start[6273]: 2020-03-09T10:52:25+0100 [SSHServerTransport,381,222.186.30.76] NEW KEYS
Mar  9 09:52:25 turris haas-proxy-start[6273]: 2020-03-09T10:52:25+0100 [SSHServerTransport,381,222.186.30.76] starting service b'ssh-userauth'
Mar  9 09:52:25 turris haas-proxy-start[6273]: 2020-03-09T10:52:25+0100 [SSHServerTransport,381,222.186.30.76] Got remote error, code 11
Mar  9 09:52:25 turris haas-proxy-start[6273]:     reason: b''
Mar  9 09:52:25 turris haas-proxy-start[6273]: 2020-03-09T10:52:25+0100 [SSHServerTransport,381,222.186.30.76] connection lost

I think, we should disable logging by default.