'Return a list of [(agent, ha_state), ...].'

def get_l3_bindings_hosting_router_with_ha_states(self, context, router_id):

    bindings = self._get_bindings_and_update_router_state_for_dead_agents(context, router_id)
    return [(binding.agent, binding.state) for binding in bindings if (binding.agent is not None)]
