[sirius] Add ib0 ip address

Fix bug where Sirius is unreachable after a deployment.

data/grid5000/sites/lyon/clusters/sirius/nodes/sirius-1.json

@@ -190,6 +190,7 @@
       "firmware_version": "20.28.4000",
       "guid": "0xb8cef60300632c5c",
       "interface": "InfiniBand",
+      "ip": "172.18.56.1",
       "kavlan": false,
       "mac": "b8:ce:f6:03:00:63:2c:5c",
       "management": false,