Change Return Type	ATSEntity to TimelineEntity in method protected createEntity(entityId String, entityType String, startTime Long, events List<TimelineEvent>, relatedEntities Map<String,Set<String>>, primaryFilters Map<String,Set<Object>>, otherInfo Map<String,Object>) : TimelineEntity in class org.apache.hadoop.yarn.server.applicationhistoryservice.timeline.TimelineStoreTestUtils