commit 6fd0bbfc20947143eb2e4c3bfd34c65bf8551468
Author: Jerome Martin <jxm@netiant.com>
Date:   Fri Jan 9 18:40:19 2015 +0100

    FabricModule.all() return only HW fabrics with ports
    
    FabricModule.all() used to return aven hardware fabrics without corresponding
    hardware. This makes sure that a hardware fabric will be returned (and be part
    or RTSRoot) only if corresponding hardware is installed and configured.
