Ensure operations are ordered

KAFKA-37

Author: rozza

src/main/java/com/mongodb/kafka/connect/sink/MongoSinkTask.java

@@ -63,7 +63,7 @@
 
 public class MongoSinkTask extends SinkTask {
     private static final Logger LOGGER = LoggerFactory.getLogger(MongoSinkTask.class);
-    private static final BulkWriteOptions BULK_WRITE_OPTIONS = new BulkWriteOptions().ordered(false);  // TODO keep the order?
+    private static final BulkWriteOptions BULK_WRITE_OPTIONS = new BulkWriteOptions();
 
     private MongoSinkConfig sinkConfig;
     private MongoClient mongoClient;