Increase socket timeout for communicating with Elasticsearch

Closes gh-25518

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/data/elasticsearch/ReactiveElasticsearchRepositoriesAutoConfigurationTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -54,8 +54,10 @@ public class ReactiveElasticsearchRepositoriesAutoConfigurationTests {
 	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(ReactiveElasticsearchRestClientAutoConfiguration.class,
 					ReactiveElasticsearchRepositoriesAutoConfiguration.class, ElasticsearchDataAutoConfiguration.class))
-			.withPropertyValues("spring.data.elasticsearch.client.reactive.endpoints=" + elasticsearch.getHost() + ":"
+			.withPropertyValues(
-					+ elasticsearch.getFirstMappedPort());
+					"spring.data.elasticsearch.client.reactive.endpoints=" + elasticsearch.getHost() + ":"
+							+ elasticsearch.getFirstMappedPort(),
+					"spring.data.elasticsearch.client.reactive.socket-timeout=30s");
 
 	@Test
 	void testDefaultRepositoryConfiguration() {