update au/agri (#2615)

* update au/agri

* set privacy policy url

Author: andrewharvey

sources/oceania/au/AGRIblack-and-white25m.geojson

@@ -2,13 +2,14 @@
     "type": "Feature",
     "properties": {
         "id": "AGRI-black_and_white-2.5m",
-        "url": "https://{switch:a,b,c}.agri.openstreetmap.org/layer/au_ga_agri/{zoom}/{x}/{y}.png",
+        "url": "https://agri.openstreetmap.org/layer/au_ga_agri/{zoom}/{x}/{y}.png",
         "attribution": {
-            "text": "AGRI, Geoscience Australia",
-            "url": "https://data.gov.au/dataset/agri-the-australian-geographic-reference-image",
-            "required": false
+            "text": "© Commonwealth of Australia (Geoscience Australia)",
+            "url": "https://knowledge.dea.ga.gov.au/data/product/australian-geographic-reference-image/",
+            "required": true
         },
         "license_url": "https://wiki.openstreetmap.org/wiki/Attribution/Geoscience_Australia",
+        "privacy_policy_url": "https://osmfoundation.org/wiki/Privacy_Policy",
         "type": "tms",
         "name": "AGRI black-and-white 2.5m",
         "country_code": "AU",