Add 'unknown' to list of OK criteria.
Add 'unknown' to list of OK criteria.

If you don't name your virtual disks sometimes they get
incorrectly flagged as failed.  Actual failed checks will
contain the 'fail' flag so that can be relied upon.

sadsfae/ansible-nagios,unmilb/ansible-nagios,sadsfae/ansible-nagios,sadsfae/ansible-nagios