The response is incorrect while creating snapshot metadata

[huangtianhua]

1.Create metadata for a snapshot with the request body:
{"metadata":{
             "key1": "value1",
             "KEY1": "value2"
}}

2.The server accept it, and return the response body, as bellow:
{"metadata":{
             "key1": "value1",
             "KEY1": "value2"
}}

3.Get the metadata of the snapshot, the server returned:
{"metadata":{
             "key1": "value1"
}}

4.I find that case ignore in cinder, so the server just add one metadata for the snapshot

5.So i think the response body should return the one which the server added when create action:
  {"metadata":{
             "key1": "value1"

}}

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/59153

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/59153
Committed: http://github.com/openstack/cinder/commit/b625f558862465184dd28da7215f34c77ec1ece6
Submitter: Jenkins
Branch: master

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