Updated openstack/openstack
Project: openstack/horizon  558a7752822ae8823d4c29a09a44cec4264e96d3

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
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: If3c8e5e3e442257f796374edba02c3a23a85839e