[rennes][abacus18] add remaining net interfaces and bios vendor

data/grid5000/sites/rennes/clusters/abacus18/nodes/abacus18-1.json

@@ -5,6 +5,9 @@
     "nb_threads": 64,
     "platform_type": "x86_64"
   },
+  "bios": {
+    "vendor": "Dell Inc."
+  },
   "exotic": false,
   "main_memory": {
   },

input/grid5000/sites/rennes/clusters/abacus18/abacus18.yaml

@@ -17,6 +17,8 @@ nodes:
       nb_cores: 32
       nb_threads: 64
       platform_type: x86_64
+    bios:
+      vendor: Dell Inc.
     processor:
       microarchitecture: Zen 2
       clock_speed: 2300000000