Make the CatalogMapper more reproducible

This will affect the Platform generator and make sure the JSON files of
the Platform are generated reproducibly.

Author: gsmet

independent-projects/tools/registry-client/src/main/java/io/quarkus/registry/catalog/CatalogMapperHelper.java

@@ -8,9 +8,12 @@
 import java.io.Writer;
 import java.nio.file.Files;
 import java.nio.file.Path;
+import java.util.Locale;
+import java.util.TimeZone;
 
 import com.fasterxml.jackson.core.JsonParser;
 import com.fasterxml.jackson.databind.DeserializationFeature;
+import com.fasterxml.jackson.databind.MapperFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
 import com.fasterxml.jackson.databind.SerializationFeature;
@@ -43,6 +46,10 @@ public static ObjectMapper initMapper(ObjectMapper mapper) {
         mapper.enable(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY);
         mapper.setPropertyNamingStrategy(PropertyNamingStrategies.KEBAB_CASE);
         mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
+        mapper.enable(MapperFeature.SORT_PROPERTIES_ALPHABETICALLY);
+        mapper.configure(SerializationFeature.ORDER_MAP_ENTRIES_BY_KEYS, true);
+        mapper.setLocale(Locale.US);
+        mapper.setTimeZone(TimeZone.getTimeZone("UTC"));
         return mapper;
     }