POST api/Order/CheckInventory
概述：下单之前携程会调用该接口检查供应商是否还有库存，然后再决定是否下单。
Response Information
Response body formats
application/json, text/json
Sample:
{}
application/xml, text/xml
Sample:
<z:anyType xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns:z="http://schemas.microsoft.com/2003/10/Serialization/" />