Comment 10 for bug 1236648

Reviewed: https://review.openstack.org/52255
Committed: http://github.com/openstack/python-novaclient/commit/362cb18cb4b31da0c4a48ee47318e53a3d9f3d38
Submitter: Jenkins
Branch: master

commit 362cb18cb4b31da0c4a48ee47318e53a3d9f3d38
Author: fujioka yuuichi <email address hidden>
Date: Thu Oct 17 09:54:54 2013 +0900

    Apply six for metaclass

    The way to using metaclass has changed in Python3.

    Python 2.7 way:

    class Foo(object):
      __metaclass__ = FooMeta

    Python 3 way:

    class Foo(object, metaclass=FooMeta):
      ...

    The six.add_metaclass() decorator allows us to use one syntax that
    works for both Python 2.7 and Python 3.

    Change-Id: Ibd31a9f91bac6ec220d802f16c77ee0306e211b3
    Closes-Bug: #1236648