Add scrolltime condition when using SearchRequest.

Original Pull Request #1975
Closes #1974

(cherry picked from commit f1b4a54)
(cherry picked from commit c1ab4d6)

Author: leejongchan

Diff for: src/main/java/org/springframework/data/elasticsearch/core/RequestFactory.java

@@ -1173,6 +1173,10 @@ private SearchRequest prepareSearchRequest(Query query, @Nullable Class<?> clazz
 			request.routing(query.getRoute());
 		}
 
+		if (query.getScrollTime() != null) {
+			request.scroll(TimeValue.timeValueMillis(query.getScrollTime().toMillis()));
+		}
+
 		request.source(sourceBuilder);
 		return request;
 	}
@@ -1248,6 +1252,10 @@ private SearchRequestBuilder prepareSearchRequestBuilder(Query query, Client cli
 			searchRequestBuilder.setRouting(query.getRoute());
 		}
 
+		if (query.getScrollTime() != null) {
+			searchRequestBuilder.setScroll(TimeValue.timeValueMillis(query.getScrollTime().toMillis()));
+		}
+
 		return searchRequestBuilder;
 	}