Comment 9 for bug 1208584

Reviewed: https://review.openstack.org/43098
Committed: http://github.com/openstack/cinder/commit/8619b974d17a186dc1013bfdc9d95f6a2e823335
Submitter: Jenkins
Branch: master

commit 8619b974d17a186dc1013bfdc9d95f6a2e823335
Author: Kui Shi <email address hidden>
Date: Wed Aug 21 19:07:43 2013 +0800

    emit warning while running flake8 without virtual env

    run_tests.sh -N -p
    it will call the flake8 installed on your host to detect PEP8, and
    the flake8 plugin "OpenStack hacking" may not installed on your
    host, so this command may not detect the OpenStack Style Commandment
    supplied by hacking(e.g H202).

    run_tests.sh -p
    it will call the flake8 from virtual env, flake8 plugin "OpenStack
    hacking" installed in virtual env will be triggered.

    The result from "run_tests.sh -p" should be trusted, and jenkins uses
    virtual env to run flake8 too.

    When "-N" is enabled, emit warning to remind user.

    Bug #1208584

    Change-Id: Ie08e5fa2b44088dad135e11583c046650d65df1e