fix weird prefixes keys when use RedisUtils.scan

[aborn]

fix weird prefixes when use RedisUtils.scan method (spring-boot-starter-data-redis 2.6.6)

ref: https://stackoverflow.com/questions/55967558/spring-data-redis-hash-keys-with-weird-prefixes-and-hscan-not-returning-resul

[CFH-Steven]

这是来自QQ邮箱的假期自动回复邮件。   你好，你发的信息我已经收到，谢谢。

[aborn]