added aoi config key

Author: wouellette

label_maker/validate.py

@@ -22,6 +22,7 @@
 
 schema = {
     'geojson': {'type': 'string'},
+    'aoi': {'type': 'string'},
     'country': {'type': 'list', 'allowed': countries},
     'bounding_box': {'type': 'list', 'items': [lon_schema, lat_schema, lon_schema, lat_schema]},
     'zoom': {'type': 'integer', 'required': True},