minor, comment scala-maven-plugin version to let compile on old maven
minor, comment scala-maven-plugin version to let compile on old maven

apache/incubator-kylin,apache/kylin,apache/incubator-kylin,apache/kylin,apache/kylin,apache/kylin,apache/incubator-kylin,apache/kylin,apache/incubator-kylin,apache/incubator-kylin,apache/incubator-kylin,apache/kylin,apache/kylin