Updated openstack/openstack
Project: openstack/oslo.rootwrap  9be37315d6c239633c6d9ef9349b2ac1d29b2fda

Move files out of the namespace package

Move the public API out of oslo.rootwrap to oslo_rootwrap. Retain
the ability to import from the old namespace package for backwards
compatibility for this release cycle.

bp/drop-namespace-packages

Change-Id: Ifed1a99e5ea6d999760731867c4294707698d41c