Bug 19889: Add new attribute to the REST API definition

It fixes t/db_dependent/api/v1/items.t

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>

api/v1/swagger/definitions/item.json

@@ -176,6 +176,10 @@
     "new_status": {
       "type": ["string", "null"],
       "description": "'new' value, whatever free-text information."
+    },
+    "exclude_from_local_holds_priority": {
+      "type": "boolean",
+      "description": "Exclude this item from local holds priority."
     }
   },
   "additionalProperties": false,