This commit ensures that Redis Testcontainers used for integration testing are managed by Spring to ensure proper ordering on shutdown.
Previously, Redis Testcontainer was closed before LettuceConnectionFactory which caused pending commands to hang and added a lot of wait to project build.
Closes gh-1086
This commit improves Redis configuration by introducing `@SpringSessionRedisConnectionFactory` qualifier for explicitly declaring a `RedisConnectionFactory` to be used by Spring Session. This is in particular useful in scenarios with multiple `RedisConnectionFactory` beans present in the application context.
Redis configuration is simplified and no longer registers a Spring Session specific `RedisOperations<Object,Object>` bean with the application context.
Users are however able to obtain `RedisOperations<Object,Object>` instance used by Spring Session using newly introduced `@SpringSessionRedisOperations` annotation.
