make flaky execute-steps-inheritance-test more robust, don't rely on Thread/sleep
make flaky execute-steps-inheritance-test more robust, don't rely on Thread/sleep

flosell/lambdacd,matthiasn/lambdacd,cz8s/lambdacd,flosell/lambdacd,cz8s/lambdacd,matthiasn/lambdacd,flosell/lambdacd,cz8s/lambdacd,matthiasn/lambdacd