def inject_network_info(self, ctxt, instance):
        self.msg_runner.inject_network_info(ctxt, instance)
Get routers with no agent binding.
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/cells/manager.py/CellsManager.inject_network_info--crossover with--dataset/ETHPy150Open openstack/neutron/neutron/scheduler/l3_agent_scheduler.py/L3Scheduler._get_unscheduled_routers