Comment 3 for bug 1459514

Reviewed: https://review.openstack.org/186388
Committed: https://git.openstack.org/cgit/openstack/magnum/commit/?id=7344fcf2a793069d78055a0bc09a0738d06e361e
Submitter: Jenkins
Branch: master

commit 7344fcf2a793069d78055a0bc09a0738d06e361e
Author: Accela Zhao <email address hidden>
Date: Fri May 29 22:18:48 2015 +0800

    Fix continuation line under/over indented problems

    When you are writing a multiple method invocation (or other similar
    syntax)

    ```
    obj.method(argument1,
               argument2,
               ...)
    ```

    If you put argument1 in the first line, the following lines should have
    the same hanging distance to argument1.

    If you put argument1 in the second line, the hanging distance should
    always be four.

    ```
    obj.method(
        argument1,
        argument2,
        ...
    )
    ```

    Otherwise PEP8 would complain for continuation line under/over indented
    problems. See below for more details

    https://www.python.org/dev/peps/pep-0008/#indentation

    This patch fixes all the continuation line indentation problems and
    enables related checks in tox.ini.

    Closes-bug: #1459514
    Change-Id: I80995c2ae71b817ad78a87ab7c567f0d36112710