Comment 18 for bug 1280100

Reviewed: https://review.openstack.org/73908
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=aa7dd439c580378b1ca2d647c7c2b0c32289b2f1
Submitter: Jenkins
Branch: master

commit aa7dd439c580378b1ca2d647c7c2b0c32289b2f1
Author: He Yongli <email address hidden>
Date: Mon Feb 17 12:42:33 2014 +0800

    Use six.StringIO 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: I5e40809b2347d4dbe031ba92dac4848b044d3af6
    Closes-Bug: #1280100