[sophia][mercantour3] add basic conf

...id5000/sites/sophia/clusters/mercantour3/mercantour3.json

...ites/sophia/clusters/mercantour3/nodes/mercantour3-1.json

...tes/sophia/clusters/mercantour3/nodes/mercantour3-10.json

...tes/sophia/clusters/mercantour3/nodes/mercantour3-11.json

...tes/sophia/clusters/mercantour3/nodes/mercantour3-12.json

...tes/sophia/clusters/mercantour3/nodes/mercantour3-13.json

...tes/sophia/clusters/mercantour3/nodes/mercantour3-14.json

...tes/sophia/clusters/mercantour3/nodes/mercantour3-15.json

...tes/sophia/clusters/mercantour3/nodes/mercantour3-16.json

...ites/sophia/clusters/mercantour3/nodes/mercantour3-2.json

...ites/sophia/clusters/mercantour3/nodes/mercantour3-3.json

...ites/sophia/clusters/mercantour3/nodes/mercantour3-4.json

...ites/sophia/clusters/mercantour3/nodes/mercantour3-5.json

...ites/sophia/clusters/mercantour3/nodes/mercantour3-6.json

...ites/sophia/clusters/mercantour3/nodes/mercantour3-7.json

...ites/sophia/clusters/mercantour3/nodes/mercantour3-8.json

...ites/sophia/clusters/mercantour3/nodes/mercantour3-9.json

...id5000/sites/sophia/clusters/mercantour3/mercantour3.yaml

...grid5000/sites/sophia/clusters/mercantour3/nodes.yaml.erb