[nancy] graphite - change chassis serial

data/grid5000/sites/nancy/clusters/graphite/nodes/graphite-3.json

@@ -12,7 +12,7 @@
   "chassis": {
     "manufacturer": "Dell Inc.",
     "name": "PowerEdge R720",
-    "serial": "66Q7NZ1"
+    "serial": "G5Q7NZ1"
   },
   "gpu": {
     "gpu": false

data/grid5000/sites/nancy/clusters/graphite/nodes/graphite-4.json

@@ -12,7 +12,7 @@
   "chassis": {
     "manufacturer": "Dell Inc.",
     "name": "PowerEdge R720",
-    "serial": "27Q7NZ1"
+    "serial": "66Q7NZ1"
   },
   "gpu": {
     "gpu": false

generators/input/sites/nancy/clusters/graphite_generated.yaml

@@ -78,7 +78,7 @@ graphite-4:
     name: debian
     version: 6.0.6
   chassis:
-    serial_number: 27Q7NZ1
+    serial_number: 66Q7NZ1
     manufacturer: Dell Inc.
     product_name: PowerEdge R720
 graphite-3: 
@@ -160,7 +160,7 @@ graphite-3:
     name: debian
     version: 6.0.6
   chassis:
-    serial_number: 66Q7NZ1 
+    serial_number: G5Q7NZ1
     manufacturer: Dell Inc.
     product_name: PowerEdge R720
 graphite-2: