Hiding instance.ip from the GUI

Change-Id: I1d584ce221cb01deaaf9f716a17d66bb5d8c75cc
diff --git a/xos/core/models/core.xproto b/xos/core/models/core.xproto
index b0c6a31..36af669 100644
--- a/xos/core/models/core.xproto
+++ b/xos/core/models/core.xproto
@@ -321,7 +321,7 @@
      optional string instance_uuid = 2 [max_length = 200, content_type = "stripped", blank = True, help_text = "Nova instance uuid", null = True, db_index = False];
      required string name = 3 [max_length = 200, content_type = "stripped", blank = False, help_text = "Instance name", null = False, db_index = False];
      optional string instance_name = 4 [max_length = 200, content_type = "stripped", blank = True, help_text = "OpenStack generated name", null = True, db_index = False];
-     optional string ip = 5 [max_length = 39, content_type = "ip", blank = True, help_text = "Instance ip address", null = True, db_index = False];
+     optional string ip = 5 [max_length = 39, content_type = "ip", blank = True, help_text = "Instance ip address", null = True, db_index = False, gui_hidden = True];
      required manytoone image->Image:instances = 6 [db_index = True, null = False, blank = False];
      optional manytoone creator->User:instances = 7 [db_index = True, null = True, blank = True];
      required manytoone slice->Slice:instances = 8 [db_index = True, null = False, blank = False];