fcoe vdsm hook
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This hook allow to configure one or more NICs as FCoE interface(s)

Intallation:
* Use engine-config to append the appropriate custom property:
  engine-config -s UserDefinedNetworkCustomProperties='fcoe=^(true|false)$'

* Verify that custom property was added:
  engine-config -g UserDefinedNetworkCustomProperties

Usage:
* Define virtual network for FCoE
* Under "setup host networks" attach (drag) it to interface.
* Click small "Edit" button and add fcoe property with value "true"
