[grenoble/yeti] Yeti is now an exotic resource

data/grid5000/sites/grenoble/clusters/yeti/nodes/yeti-1.json

@@ -17,7 +17,7 @@
     "name": "PowerEdge R940",
     "serial": "6FGQSM2"
   },
-  "exotic": false,
+  "exotic": true,
   "kavlan": {
     "eth0": {
       "kavlan-1": "192.168.192.1",