fix: 获取网元状态补充disk磁盘

src/modules/network_element/service/ne_direct_link.go

@@ -41,5 +41,6 @@ func NeState(neInfo model.NeInfo) (map[string]any, error) {
 		"expire":      resData["expiryDate"],
 		"cpu":         resData["cpuUsage"],
 		"mem":         resData["memUsage"],
+		"disk":        resData["diskSpace"],
 	}, nil
 }