修改区域添加时，区域编号重复检查功能。

侯瑞军

2020-04-09 4c517057e540851198b28b6f2134366dc0f2af47

1
E:\product\kidgrow\kidgrow-microservices-platform\kidgrow-microservices-platform\kidgrow-commons\kidgrow-sentinel-spring-boot-starter\src\main\java\com\kidgrow\sentinel\config\SentinelAutoConfigure.java