Added tests for the URL extension middleware.
Added tests for the URL extension middleware.

savi-dev/keystone,vivekdhayaal/keystone,klmitch/keystone,rushiagr/keystone,UTSA-ICS/keystone-kerberos,nuxeh/keystone,cloudbau/keystone,cbrucks/Federated_Keystone,promptworks/keystone,jonnary/keystone,cernops/keystone,ntt-pf-lab/backup_keystone,sileht/deb-openstack-keystone,rickerc/keystone_audit,cbrucks/keystone_ldap,derekchiang/keystone,dstanek/keystone,reeshupatel/demo,townbull/keystone-dtrust,nuxeh/keystone,rajalokan/keystone,kwss/keystone,roopali8/keystone,reeshupatel/demo,jumpstarter-io/keystone,roopali8/keystone,dstanek/keystone,derekchiang/keystone,ilay09/keystone,cernops/keystone,mahak/keystone,openstack/keystone,derekchiang/keystone,rajalokan/keystone,rajalokan/keystone,townbull/keystone-dtrust,promptworks/keystone,jumpstarter-io/keystone,citrix-openstack-build/keystone,promptworks/keystone,pvo/keystone,takeshineshiro/keystone,cbrucks/keystone_ldap,admiyo/keystone,dsiddharth/access-keys,nuxeh/keystone,himanshu-setia/keystone,pvo/keystone,mahak/keystone,admiyo/keystone,vivekdhayaal/keystone,ilay09/keystone,openstack/keystone,cloudbau/keystone,jonnary/keystone,cbrucks/Federated_Keystone,openstack/keystone,sileht/deb-openstack-keystone,ntt-sic/keystone,rodrigods/keystone,himanshu-setia/keystone,pvo/keystone,UTSA-ICS/keystone-kerberos,jumpstarter-io/keystone,citrix-openstack-build/keystone,rushiagr/keystone,admiyo/keystone,ging/keystone,MaheshIBM/keystone,cbrucks/Federated_Keystone,dims/keystone,savi-dev/keystone,maestro-hybrid-cloud/keystone,idjaw/keystone,sileht/deb-openstack-keystone,rodrigods/keystone,jamielennox/keystone,JioCloud/keystone,mahak/keystone,blueboxgroup/keystone,dstanek/keystone,ntt-pf-lab/backup_keystone,ntt-pf-lab/backup_keystone,ajayaa/keystone,rushiagr/keystone,MaheshIBM/keystone,ntt-sic/keystone,cbrucks/keystone_ldap,rickerc/keystone_audit,ntt-sic/keystone,rickerc/keystone_audit,ilay09/keystone,takeshineshiro/keystone,dsiddharth/access-keys,ajayaa/keystone,cloudbau/keystone,ging/keystone,kwss/keystone,juvvadi/keystone,blueboxgroup/keystone,vivekdhayaal/keystone,savi-dev/keystone,dsiddharth/access-keys,idjaw/keystone,citrix-openstack-build/keystone,kwss/keystone,klmitch/keystone,townbull/keystone-dtrust,dims/keystone,JioCloud/keystone,maestro-hybrid-cloud/keystone,jamielennox/keystone,reeshupatel/demo