Fix renamed ILM history setting in HttpExporterIT

x-pack/plugin/monitoring/src/test/java/org/elasticsearch/xpack/monitoring/exporter/http/HttpExporterIT.java

@@ -110,7 +110,7 @@ public class HttpExporterIT extends MonitoringIntegTestCase {
             .put(super.nodeSettings(nodeOrdinal))
             .put(MonitoringService.INTERVAL.getKey(), MonitoringService.MIN_INTERVAL)
             // we do this by default in core, but for monitoring this isn't needed and only adds noise.
-            .put("index.lifecycle.history_index_enabled", false)
+            .put("indices.lifecycle.history_index_enabled", false)
             .put("index.store.mock.check_index_on_close", false);
         return builder.build();
     }