sfa-3.1-22

Setting tag sfa-3.1-22
pl: tweaks for exposing country / city on nodes from site tags if set
pl: tweaks for exposing hardware_types on nodes from node tag 'hardware_type' if set
pl: fix exposing granularity
sfaresetgids.py: a utility to reset gids when a update of the tolpevel gis is needed
iotlab: various tweaks
patch backported from plcapi about issues with xmlrpc and unicode under fedora >= 24