Updated openstack/openstack
Project: openstack-dev/devstack  3f054b48d40a0efaa6a49078e98fa97855f08c8f

Add oslo.context

Treat the new oslo.context library just like the other Oslo
libraries. i.e. make it possible to either test with upstream
released library, or with git versions of oslo.context.

Change-Id: I2dc498324d6c405655a8e2e249465c5b351ca960