Change min_zoom of canals (#2098)

add boat=yes to canals when present and update min_zoom for canals to 11 when boat=yes not present

Author: jeffdefacto

yaml/water.yaml

@@ -144,10 +144,18 @@ filters:
       kind: swimming_pool
     table: osm
   - filter: {waterway: canal}
-    min_zoom: 9
+    min_zoom:
+      case:
+        - when: { boat: 'yes' }
+          then: 9
+        - else: 11
     output:
       <<: *water_standard_properties_osm
       kind: canal
+      boat:
+        case:
+          - when:  { boat: 'yes' }
+            then: 'yes'
     table: osm
   - filter: {waterway: river}
     min_zoom: 9