Uses six.text_type instead of unicode
Uses six.text_type instead of unicode

The unicode builtin doesn't exist in Python3.

Change-Id: Id13c8be7a016ec06d09cb45180dab64ade6f839c
Implements: bp keystone-py3kcompat

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