Comment 20 for bug 1280100

Reviewed: https://review.openstack.org/73910
Committed: https://git.openstack.org/cgit/openstack/horizon/commit/?id=990f151cdc16af7ca81e0fc61231344c3b4d8ff2
Submitter: Jenkins
Branch: master

commit 990f151cdc16af7ca81e0fc61231344c3b4d8ff2
Author: He Yongli <email address hidden>
Date: Mon Feb 17 13:11:16 2014 +0800

    Use six.StringIO/BytesIO instead of StringIO.StringIO

    to keep Python 3.x compatibility, use six.StringIO/BytesIO to
    replace StringIO.StringIO

    StringIO works for unicode
    BytesIO works for bytes

    Change-Id: I1d4db56dd082916879b851f2d9ac71d17c0db94f
    Closes-Bug: #1280100