[graffiti] Add old gpu of graffiti-10 in graffiti-2

data/grid5000/sites/nancy/clusters/graffiti/nodes/graffiti-2.json

@@ -45,6 +45,15 @@
       "power_default_limit": "250.00 W",
       "vbios_version": "90.02.17.00.AC",
       "vendor": "Nvidia"
+    },
+    "nvidia3": {
+      "cpu_affinity": 1,
+      "device": "/dev/nvidia3",
+      "memory": 10989000000,
+      "model": "GeForce RTX 2080 Ti",
+      "power_default_limit": "250.00 W",
+      "vbios_version": "90.02.17.00.B2",
+      "vendor": "Nvidia"
     }
   },
   "kavlan": {