[rennes, toulouse] fix aruba trunks naming lagX -> lag X

data/grid5000/sites/rennes/network_equipments/gw.json

data/grid5000/sites/rennes/network_equipments/sw-1.json

...id5000/sites/rennes/network_equipments/swcore-01-rba.json

data/grid5000/sites/toulouse/network_equipments/gw.json

...grid5000/sites/toulouse/network_equipments/sw-estats.json

input/grid5000/sites/rennes/networks/gw-rennes.yaml

input/grid5000/sites/rennes/networks/sw-1.yaml

input/grid5000/sites/rennes/networks/swcore-01-rba.yaml

input/grid5000/sites/toulouse/networks/gw.yaml

input/grid5000/sites/toulouse/networks/sw-estats.yaml