Updated openstack/openstack
Project: openstack/oslo.config  e0172be373155a55f70a28a0811440ad28b747db

Add more tests for positional CLI opts

Add tests to ensure that e.g. default=None, default=[], etc. works
as expected.

Change-Id: I66f5df6e622a66faa1d00ee0846cbec5eb119283