Updated openstack/openstack
Project: openstack/oslo.log  a5b9c2eccfa90d1c35a5c82e43a34cb766e1d651

Move files out of the namespace package

Move oslo.log to oslo_log. Since this library has not been released, we
do not need to retain the old interface for compatibility.

bp/drop-namespace-packages

Change-Id: Id8e2312a72af171918fa4d40117ec652018a37bf