[osm] adding a number of Australian city council boundaries

resources/boundaries/names/global.yaml

@@ -81,3 +81,7 @@ names:
                 probability: 0.01
               - alternative: official_name
                 probability: 0.01
+        - id: 2383266 # Melbourne (city center)
+          type: relation
+          default: alt_name # Melbourne
+          probability: 1.0

resources/boundaries/osm/au.yaml

@@ -8,3 +8,36 @@
         "9": "suburb"
         "10": "suburb"
 
+    overrides:
+        id:
+            relation:
+                # City of Sydney
+                "1251066": "city"
+                # Sydney (suburb)
+                "5729534": "city"
+                # City of Melbourne
+                "2404870": "city"
+                # Melbourne (suburb)
+                "2383266": "city"
+                # City of Adelaide
+                "3093825": "city"
+                # Adelaide (suburb)
+                "3114051": "city"
+                # City of Darwin
+                "5515884": "city"
+                # Canberra City
+                "5342034": "city"
+                # City of Wollongong
+                "6303077": "city"
+                # Wollongong (locality)
+                "6076763": "city"
+                # City of Newcastle
+                "6189831": "city"
+                # Newcastle (suburb)
+                "5989933": "city"
+                # city of Hobart
+                "6269038": "city"
+                # City of Greater Geelong
+                "2646730": "city"
+                # Geelong (suburb)
+                "2456176": "city"