Enhancement for Invoke-IcingaCheckDiskHealth: check "dirty bit" of a volume

[tectumopticum]

The name of the plugin might suggest, that the physical/logical integrety of partition is also tested, but this is not the case. It is easy to check, if a volume is marked as "dirty" and the "dirty bit" is set with an additional WMI/CIM-based command:

Get-CimInstance -ClassName Win32_Volume -Filter "DriveLetter = 'C:'" | Select-Object DriveLetter, Label, DirtyBitSet

DriveLetter Label  DirtyBitSet
----------- -----  -----------
C:          SYSTEM        True