[log] Add file hierarchy for hardware intervention logs

...grid5000/sites/toulouse/clusters/estats/nodes/estats-3.md

...grid5000/sites/toulouse/clusters/estats/nodes/estats-4.md

...grid5000/sites/toulouse/clusters/estats/nodes/estats-5.md

...grid5000/sites/toulouse/clusters/estats/nodes/estats-6.md

...grid5000/sites/toulouse/clusters/estats/nodes/estats-7.md

...grid5000/sites/toulouse/clusters/estats/nodes/estats-8.md

...grid5000/sites/toulouse/clusters/estats/nodes/estats-9.md

...5000/sites/toulouse/clusters/montcalm/nodes/montcalm-1.md

...5000/sites/toulouse/clusters/montcalm/nodes/montcalm-2.md

...5000/sites/toulouse/clusters/montcalm/nodes/montcalm-3.md

...5000/sites/toulouse/clusters/montcalm/nodes/montcalm-4.md

...5000/sites/toulouse/clusters/montcalm/nodes/montcalm-5.md

...5000/sites/toulouse/clusters/montcalm/nodes/montcalm-6.md

...5000/sites/toulouse/clusters/montcalm/nodes/montcalm-7.md

...5000/sites/toulouse/clusters/montcalm/nodes/montcalm-8.md

...5000/sites/toulouse/clusters/montcalm/nodes/montcalm-9.md