spring-cloud-tencent-examples com.tencent.cloud ${revision} ../pom.xml 4.0.0 polaris-router-grayrelease-example pom Spring Cloud Tencent Polaris Router GrayRelease Example Example of Spring Cloud Tencent Polaris Router GrayRelease router-grayrelease-gateway router-grayrelease-frontend router-grayrelease-middle router-grayrelease-backend org.springframework.cloud spring-cloud-starter-bootstrap