Fix typo in BaseAuthTokenMiddlewareTest
Fix typo in BaseAuthTokenMiddlewareTest

Setup was used where setUp is the name of the function.

Change-Id: Ie8aef4e128a443ddec48fc82cb7314081ee5bfd2

ging/python-keystoneclient,Mercador/python-keystoneclient,alexpilotti/python-keystoneclient,magic0704/python-keystoneclient,jamielennox/python-keystoneclient,magic0704/python-keystoneclient,sdpp/python-keystoneclient,jamielennox/python-keystoneclient,jamielennox/python-keystoneclient,darren-wang/ksc,sdpp/python-keystoneclient,klmitch/python-keystoneclient,alexpilotti/python-keystoneclient,Mercador/python-keystoneclient,klmitch/python-keystoneclient,ging/python-keystoneclient,darren-wang/ksc