DATAREST-899 - Prefer user registered modules over default ones.

We now issue the user registration of Jackson modules before any of the default modules Spring Data registers get applied. Testing module registration seems to be rather difficult as Jackson doesn't actually expose API to do so. An issue [0] was filed for Jackson to improve on this.

[0] FasterXML/jackson-databind#1478

Author: odrotbohm

spring-data-rest-webmvc/src/main/java/org/springframework/data/rest/webmvc/config/RepositoryRestMvcConfiguration.java

@@ -828,15 +828,17 @@ protected ObjectMapper basicObjectMapper() {
 		objectMapper.configure(SerializationFeature.INDENT_OUTPUT, true);
 		objectMapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
 		objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
+
+		// Configure custom Modules
+		configurerDelegate.configureJacksonObjectMapper(objectMapper);
+
 		objectMapper.registerModule(geoModule);
 
 		if (config().isEnableEnumTranslation()) {
 			objectMapper.registerModule(new JacksonSerializers(enumTranslator()));
 		}
 
 		Jackson2DatatypeHelper.configureObjectMapper(objectMapper);
-		// Configure custom Modules
-		configurerDelegate.configureJacksonObjectMapper(objectMapper);
 
 		return objectMapper;
 	}