Draft: [kavlan/fpga] Add fpga in oar ressource on eth_kavlan_count

rake gen:oar-properties SITE=grenoble DO=diff

servan-1:
    ["~", "eth_count", 1, 3]
    ["~", "eth_kavlan_count", 1, 3]
    ["~", "eth_rate", 25, 100]
  servan-2: same modifications as above

Erreurs rencontrés

bberard@fgrenoble:~$ kavlan -i `cat myvlan` -s -m servan-1-fpga0.grenoble.grid5000.fr
ERROR : "bberard" does not have kavlan rights on nodes using VLAN 4