Updated openstack/openstack
Project: openstack/keystonemiddleware  4d7f610f891224ac43204d2a1c0fb5393344698c

Correct tests to use strings in conf

When paste passes the conf to the auth_token middleware all of the
values are strings. The tests should also pass all the conf values
as strings.

Change-Id: I2001b74b5a3e6f762f7f298c217856dc56eb81fa