apm-application-toolkit org.skywalking 3.2.4-2017 4.0.0 apm-toolkit-log4j-1.x log4j log4j 1.2.17 provided org.apache.maven.plugins maven-source-plugin attach-sources jar 2.4 bintray-wu-sheng-sky-walking-repository wu-sheng-sky-walking-repository https://api.bintray.com/maven/wu-sheng/skywalking/org.skywalking.apm-toolkit-log4j-1.x/;publish=1