[toulouse] Provide montcalm disk by_path information.

...00/sites/toulouse/clusters/montcalm/nodes/montcalm-1.json

...00/sites/toulouse/clusters/montcalm/nodes/montcalm-2.json

...00/sites/toulouse/clusters/montcalm/nodes/montcalm-3.json

...00/sites/toulouse/clusters/montcalm/nodes/montcalm-4.json

...00/sites/toulouse/clusters/montcalm/nodes/montcalm-5.json

...00/sites/toulouse/clusters/montcalm/nodes/montcalm-6.json

...00/sites/toulouse/clusters/montcalm/nodes/montcalm-7.json

...00/sites/toulouse/clusters/montcalm/nodes/montcalm-8.json

...00/sites/toulouse/clusters/montcalm/nodes/montcalm-9.json

...t/grid5000/sites/toulouse/clusters/montcalm/montcalm.yaml