Fixes case insensitive for resp body

[OpenStack Infra]

https://review.openstack.org/59153
commit b625f558862465184dd28da7215f34c77ec1ece6
Author: huangtianhua <email address hidden>
Date: Fri Nov 29 16:56:35 2013 +0800

    Fixes case insensitive for resp body

    Create metadata for a snapshot with key-value set, which key in uppercase
    and lowercase(e.g.{"key": "v1", "KEY": "V1"), the server accept the
    request and return the key-value set {"key": "v1", "KEY": "V1"}. But the
    server just add one metadata because the server is not case sensitive.

    The patch will modify the resp body with the one which the server added.

    update_all has the same ploblem.

    DocImpact
    Change-Id: I684049412a4aa84f593e970c87157c74fffdfffe
    Closes-Bug: #1255917

[Openstack Gerrit (openstack-gerrit)]

Fix proposed to branch: master
Review: https://review.openstack.org/92432

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/92432
Committed: https://git.openstack.org/cgit/openstack/api-site/commit/?id=a09ffc5289237df1e9877de43b911b17cc38cadc
Submitter: Jenkins
Branch: master

commit a09ffc5289237df1e9877de43b911b17cc38cadc
Author: Diane Fleming <email address hidden>
Date: Tue May 6 11:41:05 2014 -0700

    Add missing snapshot metadata calls

    Include note about case-sensitivity of key names

    Closes-Bug: #1257936

    Change-Id: If057cc65860cbcca3f2ad66868470f6a9bd9dc71
    author: diane fleming