spring-cloud

The code coverage https://codecov.io/github/ctripcorp/apollo seems to be less than 60%.

It would be great if it can be brought up around 80-90%.

版本：2.2.6
https://github.com/alibaba/spring-cloud-alibaba/blob/387dd46fa4d037dad3d7091fca2274d4cc1d5034/spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-nacos-discovery/src/main/java/com/alibaba/cloud/nacos/registry/NacosServiceRegistry.java#L40-L60

在NacosServiceRegistry里引用NacosServiceManager是采用直接注入的方式，当在我想在项目中实现注册多个Nacos注册中心时，就没办法复用此类，建议引用NacosServiceManager的方式和引用NacosDiscoveryProper

每次想重新定义derby-data的目录，都需要重新改正多个变量。能否用一个变量统一一下路径？

Hi,

I've started using spring cloud gateway as front door for set of microservices, and using oauth2. When implementing bean "ReactiveOAuth2AuthorizedClientManager" to customize some prosperities, a duplicate bean definition exception is throw at runtime:
_org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type 'org.springframework.security.oauth2.client.R