org.springframework.boot spring-boot-starter-parent 2.2.5.RELEASE 4.0.0 SkyWalking End to End Tests org.apache.skywalking apache-skywalking-e2e 1.0.0 pom provider consumer 1.8 ${java.version} ${java.version} UTF-8 2.2.5.RELEASE 30.1.1-jre 1.18.20