Enhance tests for user extra attribute mapping
Enhance tests for user extra attribute mapping

This test shows that when an extra attribute mapping like
'description:description' is used, the description isn't returned
in the user.

Change-Id: Ie3520b315a0eecc2503953c0f15ae1da9a8070c9
Related-Bug: #1293698

rushiagr/keystone,maestro-hybrid-cloud/keystone,jamielennox/keystone,dstanek/keystone,rushiagr/keystone,reeshupatel/demo,promptworks/keystone,blueboxgroup/keystone,MaheshIBM/keystone,nuxeh/keystone,openstack/keystone,idjaw/keystone,ajayaa/keystone,takeshineshiro/keystone,cernops/keystone,rajalokan/keystone,ilay09/keystone,jumpstarter-io/keystone,ging/keystone,idjaw/keystone,openstack/keystone,dstanek/keystone,ilay09/keystone,dims/keystone,UTSA-ICS/keystone-kerberos,jonnary/keystone,roopali8/keystone,mahak/keystone,openstack/keystone,jumpstarter-io/keystone,himanshu-setia/keystone,rodrigods/keystone,nuxeh/keystone,ging/keystone,mahak/keystone,rodrigods/keystone,UTSA-ICS/keystone-kerberos,blueboxgroup/keystone,promptworks/keystone,nuxeh/keystone,rushiagr/keystone,himanshu-setia/keystone,maestro-hybrid-cloud/keystone,dstanek/keystone,dims/keystone,vivekdhayaal/keystone,klmitch/keystone,rajalokan/keystone,rajalokan/keystone,vivekdhayaal/keystone,mahak/keystone,klmitch/keystone,jumpstarter-io/keystone,jonnary/keystone,roopali8/keystone,takeshineshiro/keystone,reeshupatel/demo,ilay09/keystone,MaheshIBM/keystone,reeshupatel/demo,promptworks/keystone,cernops/keystone,ajayaa/keystone,jamielennox/keystone,vivekdhayaal/keystone