Use jsonutils in ec2token
Use jsonutils in ec2token

To get access to to_primitive()

Change-Id: I9a09609b5469870a217386be9fbad9261ef0c815

rh-s/heat,pshchelo/heat,takeshineshiro/heat,citrix-openstack-build/heat,noironetworks/heat,cryptickp/heat,openstack/heat,miguelgrinberg/heat,takeshineshiro/heat,dragorosson/heat,miguelgrinberg/heat,gonzolino/heat,redhat-openstack/heat,JioCloud/heat,pshchelo/heat,Triv90/Heat,srznew/heat,redhat-openstack/heat,cwolferh/heat-scratch,NeCTAR-RC/heat,pratikmallya/heat,varunarya10/heat,dragorosson/heat,NeCTAR-RC/heat,jasondunsmore/heat,JioCloud/heat,ntt-sic/heat,maestro-hybrid-cloud/heat,rickerc/heat_audit,varunarya10/heat,dims/heat,pratikmallya/heat,Triv90/Heat,Triv90/Heat,srznew/heat,openstack/heat,gonzolino/heat,cwolferh/heat-scratch,ntt-sic/heat,citrix-openstack-build/heat,rdo-management/heat,rh-s/heat,steveb/heat,jasondunsmore/heat,cryptickp/heat,rdo-management/heat,maestro-hybrid-cloud/heat,rickerc/heat_audit,noironetworks/heat,dims/heat,steveb/heat