Add support for Librenms

[nerdalertdk]

Hi

It would be awesome if you could add support for librenms.org, they have en API to extract most infomation about alerts

http://docs.librenms.org/API/API-Docs/#alerts-top

[HenriWahl]

I cannot promise anything but let this issue stay on the todo list.

[nerdalertdk]

Sounds good 👍

[nerdalertdk]

Any news/progress on this :)

[HenriWahl]

Not really... some contribution would be great.

[HenriWahl]

Finally... merged some seconds ago: #1152