Removed maxDiff attribute from TestCase
Removed maxDiff attribute from TestCase

The default for maxDiff is already None so there is no reason for us to
redefine it.

https://docs.python.org/2/library/unittest.html#unittest.TestCase.maxDiff

Change-Id: Ie997439a4cb676b5f8a2f599debbac4f95612b54

idjaw/keystone,mahak/keystone,dstanek/keystone,jonnary/keystone,rushiagr/keystone,dims/keystone,idjaw/keystone,dstanek/keystone,dims/keystone,jamielennox/keystone,openstack/keystone,takeshineshiro/keystone,himanshu-setia/keystone,vivekdhayaal/keystone,openstack/keystone,openstack/keystone,rajalokan/keystone,rajalokan/keystone,rushiagr/keystone,takeshineshiro/keystone,ajayaa/keystone,vivekdhayaal/keystone,rajalokan/keystone,nuxeh/keystone,rushiagr/keystone,promptworks/keystone,vivekdhayaal/keystone,ilay09/keystone,klmitch/keystone,ilay09/keystone,maestro-hybrid-cloud/keystone,ilay09/keystone,jumpstarter-io/keystone,promptworks/keystone,nuxeh/keystone,cernops/keystone,himanshu-setia/keystone,jumpstarter-io/keystone,promptworks/keystone,mahak/keystone,klmitch/keystone,mahak/keystone,jonnary/keystone,dstanek/keystone,jamielennox/keystone,cernops/keystone,jumpstarter-io/keystone,nuxeh/keystone,maestro-hybrid-cloud/keystone,roopali8/keystone,ajayaa/keystone,roopali8/keystone