Clarify type in the context of this test

Author: ycombinator

x-pack/plugin/monitoring/src/test/java/org/elasticsearch/xpack/monitoring/integration/MonitoringIT.java

@@ -23,7 +23,6 @@
 import org.elasticsearch.common.xcontent.XContentBuilder;
 import org.elasticsearch.common.xcontent.XContentHelper;
 import org.elasticsearch.common.xcontent.XContentType;
-import org.elasticsearch.index.mapper.MapperService;
 import org.elasticsearch.license.License;
 import org.elasticsearch.plugins.Plugin;
 import org.elasticsearch.rest.RestStatus;
@@ -127,7 +126,7 @@ public void testMonitoringBulk() throws Exception {
 
             final MonitoringBulkResponse bulkResponse =
                     new MonitoringBulkRequestBuilder(client())
-                            .add(system, null, new BytesArray(createBulkEntity().getBytes("UTF-8")), XContentType.JSON,
+                            .add(system, "monitoring_data_type", new BytesArray(createBulkEntity().getBytes("UTF-8")), XContentType.JSON,
                                  System.currentTimeMillis(), interval.millis())
                     .get();
 
@@ -178,7 +177,7 @@ public void testMonitoringBulk() throws Exception {
                        equalTo(1L));
 
             for (final SearchHit hit : hits.getHits()) {
-                assertMonitoringDoc(toMap(hit), system, MapperService.SINGLE_MAPPING_NAME, interval);
+                assertMonitoringDoc(toMap(hit), system, "monitoring_data_type", interval);
             }
         });
     }