heat engine : Make Resource::swift handle auth_token
heat engine : Make Resource::swift handle auth_token

Make Resource::swift() handle auth_token so the S3
resource will work with AWS auth

Fixes #271

Change-Id: Ie5aca026dea25045e42aab677a2c793c79de1658
Signed-off-by: Steven Hardy <4d1810d1ff6d7f22d774341c4549c02173d2f2ab@redhat.com>

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