Some suggestions about Thread.sleep()

Hi, i found something in line 275-281
https://github.com/jobxhub/JobX/blob/master/jobx-agent/src/main/java/com/jobxhub/agent/bootstrap/JobXAgent.java

The code will wait for 'stopAwait' signal. It may cause potentially endless loop. I think use ‘CountDownLatch.await’ and set a max waitting time should be helpful.

Best Regards