Comment 4 for bug 1437201

Since it's exactly every second, it's probably heat's scheduler running a check job which calls novaclient. novaclient will then log this stuff in debug mode.

However the default_log_level config setting *should* set "urllib3.connectionpool" to warning and above.

https://github.com/openstack/oslo.log/blob/master/oslo_log/_options.py#L90
https://github.com/openstack/oslo.log/blob/master/oslo_log/log.py#L320-L329