Container metadata cannot be added or updated

[Wayne Foley]

Using the SDK you cannot add or update metadata for StorageContainers.

RCA:
The header that is being sent to the server for adding/updating metadata for containers is "X-Object-Meta". This is the incorrect header for sending container metadata, and is ignored by the server.

Fix:
The header that is sent needs to be "X-Container-Meta".

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/109748

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/109748
Committed: https://git.openstack.org/cgit/stackforge/openstack-sdk-dotnet/commit/?id=ae3b0fbe19d045fc199a1c54958ac9e9ef7e10d2
Submitter: Jenkins
Branch: master

commit ae3b0fbe19d045fc199a1c54958ac9e9ef7e10d2
Author: Wayne Foley <email address hidden>
Date: Fri Jul 25 14:40:20 2014 -0700

    Fix for Bug#1342913

    Updated the REST client to send the correct "X-Container-Meta" header instead of using "X-Object-Meta".
    Updated related unit tests, and rest simulator to use the right header values.
    Updated the http abstraction unit tests to ensure that httpbin does not cache it's response headers.

    Closes-Bug: #1342913
    Change-Id: I020b21313da1ba77b37bbbe0cffb8c4f320f8ce6