Merge branch 'grvingt_prio' into 'master'

Set priority for grvingt to 201701 so that it is less than grele's (see bug 16466)

See merge request !858

data/grid5000/sites/nancy/clusters/grvingt/grvingt.json

@@ -355,6 +355,7 @@
     }
   ],
   "model": "Dell PowerEdge C6420",
+  "priority": "201701",
   "queues": [
     "admin",
     "production"

input/grid5000/sites/nancy/clusters/grvingt/grvingt.yaml

@@ -3,6 +3,7 @@ model: Dell PowerEdge C6420
 created_at: 2018-04-11
 kavlan: true
 boot_type: bios
+priority: '201701'
 queues:
   - admin
   - production