DATAMONGO-2217 - Fix zonded DateTime usage in test.

Original Pull Request: #654

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/aggregation/AggregationTests.java

@@ -90,6 +90,7 @@ import com.mongodb.client.MongoCollection;
  * @author Nikolay Bogdanov
  * @author Maninder Singh
  * @author Sergey Shcherbakov
+ * @author Minsu Kim
  */
 @RunWith(SpringJUnit4ClassRunner.class)
 @ContextConfiguration("classpath:infrastructure.xml")
@@ -1418,10 +1419,11 @@ public class AggregationTests {
 		mongoTemplate.dropCollection(ObjectWithDate.class);
 
 		DateTime dateTime = new DateTime() //
+				.withZone(DateTimeZone.UTC) //
 				.withYear(2014) //
 				.withMonthOfYear(2) //
 				.withDayOfMonth(7) //
-				.withTime(3, 4, 5, 6).toDateTime(DateTimeZone.UTC).toDateTimeISO();
+				.withTime(3, 4, 5, 6).toDateTimeISO();
 
 		ObjectWithDate owd = new ObjectWithDate(dateTime.toDate());
 		mongoTemplate.insert(owd);