[abacus20] add network description

data/grid5000/sites/rennes/clusters/abacus20/nodes/abacus20-1.json

@@ -179,8 +179,8 @@
       "rate": 1000000000,
       "sriov": false,
       "sriov_totalvfs": 0,
-      "switch": null,
-      "switch_port": null,
+      "switch": "swdc-a035-01-rba",
+      "switch_port": "Eth103/1/8",
       "vendor": "Broadcom Inc. and subsidiaries"
     },
     {

data/grid5000/sites/rennes/network_equipments/swdc-a035-01-rba.json

@@ -256,6 +256,10 @@
         {
         },
         {
+          "kind": "node",
+          "port": "eth0",
+          "snmp_name": "Eth103/1/8",
+          "uid": "abacus20-1"
         },
         {
         },