Updated openstack/openstack
Project: openstack/neutron  af49bd7d106b314960056b7edf75826f2e3f69d4

enable H401 hacking check

This change corrects H401 (docstring should not start with a space)
errors and enables the check
Change-Id: I2f798421d5895fcec349c757d27b7f085ee001e7
Partial-Bug: 1329017