Some Riello NetMan snmp cards identitified as Generic Device instead of Power

Tags: #<Tag:0x00007f522195b288> #<Tag:0x00007f522195b120>

We have several Riello UPS managed with Netman204 snmp cards. All of them are the same model and firmware rev. Almost all of them are identified fine, but two of them are being indentified as Generic Device instead of Power dev.

The problem is fixed adding to riello.yaml this line:
- .1.3.6.1.4.1.5491.302

This is the output with the riello.yaml file
https://p.libren.ms/view/a2a08fd9

This is the output with my modified riello.yaml (this works fine)
https://p.libren.ms/view/b431540c

If you can submit this as a pull request on github that would be amazing.