Updated openstack/openstack
Project: openstack/oslo-incubator  84a8356899291479516d3b781e3058871a2019ec

log: make tests portable

There's no need to specify the address of the logger, and it actually
breaks the portability of the tests. With this patch, the tests also
work on Darwin.

Change-Id: Iae3fae1e089fd6ea03ac078a093f0c80a2988788