Add unittests for faultwrap middleware
Add unittests for faultwrap middleware

Partially implements bp exception-formatting

Change-Id: Ib57ce625775e222e5b42b22c10687bce7b63d26d

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