[all] Add PDU metrics info

data/grid5000/sites/lille/pdus/pdu-b1p1.json

data/grid5000/sites/lille/pdus/pdu-b1p2.json

data/grid5000/sites/lille/pdus/pdu-b1p3-2.json

data/grid5000/sites/lille/pdus/pdu-b1p3.json

data/grid5000/sites/lille/pdus/pdu-b2p1.json

data/grid5000/sites/lille/pdus/pdu-b2p2.json

data/grid5000/sites/lille/pdus/pdu-b3p1.json

data/grid5000/sites/lille/pdus/pdu-b3p2-1.json

data/grid5000/sites/lille/pdus/pdu-b3p2-2.json

data/grid5000/sites/lille/pdus/pdu-b3p3.json

data/grid5000/sites/nancy/clusters/graoully/graoully.json

data/grid5000/sites/nancy/clusters/grimoire/grimoire.json

data/grid5000/sites/nancy/clusters/grisou/grisou.json

data/grid5000/sites/nancy/pdus/graffiti-pdu1.json

data/grid5000/sites/nancy/pdus/graffiti-pdu2.json

data/grid5000/sites/nancy/pdus/graffiti-pdu3.json

data/grid5000/sites/nancy/pdus/graffiti-pdu4.json

data/grid5000/sites/nancy/pdus/graoully-pdu1.json

data/grid5000/sites/nancy/pdus/graoully-pdu2.json

data/grid5000/sites/nancy/pdus/grimani-pdu1.json