Add support for Emerson Network Power NetSure 211

Hi,

I would like to request a support of the Emerson Network Power NetSure 211 Power Supply Systems with SCU+ Controller (Standard Control Unit Plus)
Model SCU+: M522B
Currently they’re recognized as Generic Device

https://p.libren.ms/view/04815671
https://p.libren.ms/view/0f3653ea
https://p.libren.ms/view/97ee9cf2

You need to post this request on github.

ok. my mistake.
Thanks

created: https://github.com/librenms/librenms/issues/8084