Automate creation of CDAP Docker container @mingfang
clean up processes
clean up license header
Merge remote-tracking branch 'origin/develop' into feature/cdap-docker
PEBKAC fix: In Linux apparently, files cannot be removed from places where they do not exist
modify cdap.sh so there is only version of it (detecting docker environment)
Clean up apt pkgs and cache to free up space, clean up ssh config
make sure apt-get autoremove is non-interactive
Merge pull request #767 from caskdata/feature/cdap-docker

Automate creation of CDAP Docker container