snmp结果需要做值映射转换

### Question



目前使用snmp获取的值，尤其是状态类的值，基本都以数字结果呈现。这样在展示时并不能很好的看到真实的状态。我也搜索过相关issue，目前并没有很好的解决办法。或许可以参考zabbix的实现逻辑，在模板中添加一个mapping配置项，在mapping中列举数字的映射关系，这样可以很好的展示想要的结果。

The issue names no files, tests, or entry points. Start by locating SNMP result handling and the template configuration path, then compare the proposed mapping behavior with existing Zabbix-related support. Done means a template can define numeric-to-label mappings and SNMP status values render accordingly, with coverage for the mapping behavior.

Written by the indexing model from the issue text.