Open Stack

This release reverts the removal of the namespace package and should
unblock the projects that were breaking with a paste.ini error in
grenade like https://bugs.launchpad.net/oslo.middleware/+bug/1463478

Excerpts from doug's message of 2015-06-09 17:41:45 -0400:
> We are excited to announce the release of:
> 
> oslo.middleware 2.1.0: Oslo Middleware library
> 
> This release is part of the liberty release series.
> 
> With source available at:
> 
>     http://git.openstack.org/cgit/openstack/oslo.middleware
> 
> For more details, please see the git log history below and:
> 
>     http://launchpad.net/oslo.middleware/+milestone/2.1.0
> 
> Please report issues through launchpad:
> 
>     http://bugs.launchpad.net/oslo.middleware
> 
> Changes in oslo.middleware 2.0.0..2.1.0
> ---------------------------------------
> 
> 6a03efc Revert "Remove oslo namespace package"
> 
> Diffstat (except docs and test files)
> -------------------------------------
> 
> oslo/__init__.py                  |  13 +++++
> oslo/middleware/__init__.py       |  28 ++++++++++
> oslo/middleware/base.py           |  13 +++++
> oslo/middleware/catch_errors.py   |  13 +++++
> oslo/middleware/correlation_id.py |  13 +++++
> oslo/middleware/debug.py          |  13 +++++
> oslo/middleware/request_id.py     |  13 +++++
> oslo/middleware/sizelimit.py      |  13 +++++
> setup.cfg                         |   4 ++
> 15 files changed, 429 insertions(+)
>