test: Update LiveUpdate integration test config

Author: fwsGonzo

test/kernel/integration/LiveUpdate/config.json

@@ -1,5 +1,11 @@
 {
   "net" : [
-    ["10.0.0.49", "255.255.255.0", "10.0.0.1"]
+    {
+      "iface": 0,
+      "config": "static",
+      "address": "10.0.0.49",
+      "netmask": "255.255.255.0",
+      "gateway": "10.0.0.1"
+    }
   ]
 }