[SHIRO-804] - Avoid conflicts with spring boot aop

[markixy]

#268

I found the problem related to the resolution order of Configuration. The ProxyCreator automatically created by Spring AOP is implemented through AopAutoConfiguration.
There are two cases:

1. First parse AopAutoConfiguration, will create a ProxyCreator, then parse ShiroAnnotationProcessorAutoConfiguration, judge @ConditionalOnMissBean, ProxyCreator already exists, no more ProxyCreator will be created. (good case)
2. First parse ShiroAnnotationProcessorAutoConfiguration, judge @ConditionalOnMissBean, there is no ProxyCreator, will create a ProxyCreator, then parse AopAutoConfiguration, will create the ProxyCreator again. (two ProxyCreators exist in the IOC, incorrect case!)

My version is:
shiro-spring-boot-starter:1.8.0
spring-boot-starter-aop:2.3.1.RELEASE

So, to be on the safe side, add @AutoConfigureAfter(AopAutoConfiguration.class) to the ShiroAnnotationProcessorAutoConfiguration.

[bdemers]

Thanks @markixy !
The change looks good, just waiting on CI now!

[fpapon]

LGTM

[fpapon]

@markixy thanks for your contribution!