add WIFI_BSSD field
update documentation
report interface speed in Mb/s
check file format for safety
cosmetics
restrict dhcp and gateway to IPv4 addresses
Merge branch '2.3.x' of git+ssh://forge.fusioninventory.org/git/fusioninventory/agent into 2.3.x
enforce consistent ordering
consider every interface without UP flag as down
additional infor for wifi interfaces

see: #1843
assign additional interface types
remove useless test

The simple lack of associated device is enough to identify virtual
devices.
identify infiniband interfaces
ensure consistent version values
additional test sample
more versatile interface
add PCIID for network devices
drop data model documentation

It has been transfered in the wiki, as a formal specification.
reorder elements
fix LSPCI parsing