Comment 1 for bug 1811044

Here is a simple fix version: http://paste.openstack.org/show/741004/

This just always adds it to the saved_headers. So if it exists it'll always appear in the container_info['verions'].

As it currently stands however, disabling versioning wont disable the legacy versioning. This is also really deprecating the option though, as we just always enable it.

Not saying this is the best approach. But is definitely the simplest. And could be back ported so people could remove the deprecated option, as the middleware would find it.