package/confd: update factory-config, zeroconf for IPv4/IPv6 on eth0

Still ways to go here, eth0 should be in a bridge with a vlan1 interface
on top, which in turn should have this config.  But let's start here, it
works! :-)

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

package/confd/factory-config.cfg

@@ -1,5 +1,24 @@
 {
+  "ietf-interfaces:interfaces": {
+    "interface": [
+      {
+        "name": "eth0",
+        "type": "iana-if-type:ethernetCsmacd",
+        "ietf-ip:ipv4": {
+          "infix-ip:autoconf": {
+            "enabled": true
+          }
+        },
+        "ietf-ip:ipv6": {
+          "enabled": true,
+          "autoconf": {
+            "create-global-addresses": true
+          }
+        }
+      }
+    ]
+  },
   "ietf-system:system": {
-    "hostname": "default"
+    "hostname": "infix"
   }
 }