HP monitoring plugin doesn't monitor raid controller status

Created by: mancdaz

Currently the plugin monitors disk/cpu/dimm status, but not the raid controller itself. This has affected customers who've had a raid controller fail.

My first assumption was that a failed raid controller means the underlying raid array is innaccessible, and so no alerts would get out anyway, but on reading it seems that some arrays can fail partially, meaning they don't recognise some of the disks in the array, but do recognise enough to keep the array accessible. Therefore, it's worth throwing a controller monitor into the mix (it's really not much overhead to do so anyway).