Rework how routing is done in ec2 endpoint.
Rework how routing is done in ec2 endpoint.

openstack-attic/melange,rackerlabs/melange,rackerlabs/melange,rajarammallya/melange,openstack-attic/melange,rajarammallya/melange,rajarammallya/melange,openstack-attic/melange,rackerlabs/melange