Updated openstack/openstack

Project: openstack/pylockfile  99870bfa02f1ba490da6a59b1499f0f1578c9825

Remove oslo.concurrency from replacement recommendation

Oslo libraries (especially those prefixed with oslo) are
really better suited for usage inside openstack, while libraries
from oslo without that prefix are better suited for all around
general usage so to avoid confusion take off the recommendation
to replace pylockfile with oslo.concurrency and just leave the better
matched fasteners as its replacement.

Also fixes a very tiny flake8 warning that was stopping the
pep8/flake8 job from working.

Change-Id: I1ec1cbfb4c7e371ed93627cffa2b32dbe0401069