Exporting the instance network_port on the RAPI

Patch for adding network_port to the instance attributes exported by the
RAPI.

[iustin@google.com: slightly changed the formatting]
Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

lib/rapi/rlib2.py

@@ -34,6 +34,7 @@ I_FIELDS = ["name", "admin_state", "os",
             "pnode", "snodes",
             "disk_template",
             "nic.ips", "nic.macs", "nic.bridges",
+            "network_port",
             "disk.sizes", "disk_usage",
             "beparams", "hvparams",
             "oper_state", "oper_ram", "status",