从etcd获取节点简单列表信息

{"code":200,"msg":"success","msgcn":"成功","body":{"list":[{"uuid":"915f2c95-b723-4c88-9860-dbe33f4f51ac","host_name":"10.0.55.73","internal_ip":"10.0.55.73","external_ip":"10.0.55.73","available_memory":16267956,"available_cpu":4,"role":"compute","status":"create","labels":{"key1":"value1"},"unschedulable":false},{"uuid":"1234c95-b723-4c88-9860-dbe33f4f51ac","host_name":"10.0.55.73","internal_ip":"10.0.55.73","external_ip":"10.0.55.73","available_memory":16267956,"available_cpu":4,"role":"","status":"running","labels":{"key1":"value4"},"unschedulable":false}]}}