Polish related to testcontainers

* Use getHost instead of getContainerIpAddress
* Rely on OracleContainer and it's improvements which involve the log
wait strategy

spring-session-samples/spring-session-sample-xml-redis/src/main/java/sample/EmbeddedRedisConfig.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2022 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.
@@ -40,8 +40,7 @@ public class EmbeddedRedisConfig {
 	@Bean
 	@Primary
 	public LettuceConnectionFactory redisConnectionFactory() {
-		return new LettuceConnectionFactory(redisContainer().getContainerIpAddress(),
-				redisContainer().getFirstMappedPort());
+		return new LettuceConnectionFactory(redisContainer().getHost(), redisContainer().getFirstMappedPort());
 	}
 
 }