https://www.linkedin.com/pulse/android-continuous-integration-jenkins-%C3%B6zg%C3%BCr-kaya
#for cleaning old builds and build without unit tests
gradle clean build -b $WORKSPACE/build.gradle --exclude-task test
#for cleaning old builds and build with unit tests
gradle clean build -b $WORKSPACE/build.gradle
report path:
$WORKSPACE/build/test-results/*.xml