Updated openstack/openstack
Project: openstack/neutron  0965f81eb45abf1947ba9a7ac7e0fbcd6cbb2abc

Switch run-time import to using importutils.import_module

.. and enable the cyclic-import pylint check, now that this particular
import is invisible to pylint.

Change-Id: I9bfe7f77742b0db3ebead6a6767ade9b91e54c22