Updated openstack/openstack
Project: openstack/neutron  ba46870b8d6f519083026302e1fd795a72acb6c7

Provide a quick way to run flake8

"run_tests.sh -p" always checks every file for errors even though you
have probably only changed a handful. This patch adds "run_tests.sh -8"
which only checks the files that were modified in the HEAD commit or
in the current working tree.

It is borrowed from the recent nova commit b011325cc6.
The related ML post is:
http://lists.openstack.org/pipermail/openstack-dev/2014-August/043346.html

Change-Id: Ieeabf1b79a0790af8bde3144dca59b4245a0b79a