dict.keys() compatibility in Python 2 and 3

[Tang Chen]

In Python 2, dict.keys() will return a list. But in Python 3, it will return an iterator. So we need to fix all the assumptions that assuming dict.keys() is a list.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/291973

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/291973
Committed: https://git.openstack.org/cgit/openstack/python-openstackclient/commit/?id=dc7e4fc15d80eed5a814f0b87e1860f0cd86c2ee
Submitter: Jenkins
Branch: master

commit dc7e4fc15d80eed5a814f0b87e1860f0cd86c2ee
Author: Tang Chen <email address hidden>
Date: Sat Mar 12 10:58:28 2016 +0800

    Fix dict.keys() compatibility for python 3

    In Python 2, dict.keys() will return a list.
    But in Python 3, it will return an iterator.
    So we need to fix all the places that assuming
    dict.keys() is a list.

    Change-Id: I8d1cc536377b3e5c644cfaa0892e40d0bd7c11b1
    Closes-Bug: #1556350

[Doug Hellmann (doug-hellmann)]

This issue was fixed in the openstack/python-openstackclient 2.4.0 release.