[bug16032] standardize max walltime to 7 days on ex igrida nodes

...5000/sites/rennes/clusters/abacus14/nodes/abacus14-1.json

...5000/sites/rennes/clusters/abacus25/nodes/abacus25-1.json

...00/sites/rennes/clusters/roazhon12/nodes/roazhon12-1.json

...00/sites/rennes/clusters/roazhon12/nodes/roazhon12-2.json

...00/sites/rennes/clusters/roazhon12/nodes/roazhon12-3.json

...00/sites/rennes/clusters/roazhon12/nodes/roazhon12-4.json

...5000/sites/rennes/clusters/roazhon3/nodes/roazhon3-1.json

input/grid5000/sites/rennes/clusters/abacus14/abacus14.yaml

input/grid5000/sites/rennes/clusters/abacus25/abacus25.yaml

...t/grid5000/sites/rennes/clusters/roazhon12/roazhon12.yaml

input/grid5000/sites/rennes/clusters/roazhon3/roazhon3.yaml