Race condition when copying llap.tar.gz by multiple HSI

When both HSI started simultaneously , one of it fails to start.

This issue seems to be because multiple HSI are started simultaneous and there is a race condition by DFSClient trying to copy llap tar package to HDFS

Restarting one after another would resolve the issue or trying second restart might help. But for long term fix , we would need to fix llap-server/src/main/resources/templates.py and retry copyFromLocal.