Adapt to Junit changes.

Original Pull Request #2325
Closes #2324

src/test/java/org/springframework/data/elasticsearch/core/SearchAsYouTypeIntegrationTests.java

@@ -49,7 +49,7 @@ public abstract class SearchAsYouTypeIntegrationTests {
 	@Autowired private IndexNameProvider indexNameProvider;
 
 	@BeforeEach
-	private void setup() {
+	void setup() {
 		indexNameProvider.increment();
 		operations.indexOps(SearchAsYouTypeEntity.class).createWithMapping();
 	}

src/test/java/org/springframework/data/elasticsearch/core/suggest/CompletionIntegrationTests.java

@@ -54,7 +54,7 @@ public abstract class CompletionIntegrationTests implements NewElasticsearchClie
 	@Autowired private IndexNameProvider indexNameProvider;
 
 	@BeforeEach
-	private void setup() {
+	void setup() {
 		indexNameProvider.increment();
 		operations.indexOps(CompletionEntity.class).createWithMapping();
 		operations.indexOps(AnnotatedCompletionEntity.class).createWithMapping();