Fix misspelling of Ubuntu so tdl is properly found.
Fix misspelling of Ubuntu so tdl is properly found.

Found while looking at issue #29.

Signed-off-by: Jeff Peeler <d776211e63e47e40d00501ffdb86a800e0782fea@redhat.com>

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