Updated openstack/openstack
Project: openstack/oslo.config  7d68dc8d195f59227f2c4ed07e502f1f893deefe

Work toward Python 3.4 support and testing

Change-Id: Iadb1b695b8314d385716619561a1604a41f6c8d5
(cherry picked from commit 7a091ce8ede2fd4072167f0bd78293d76008942f)