XD-1243 add ability to terminate EC2 XD Instances

Also updated behavior to handle running from other directories besides base project directory.

Security variables now can be set via environment.

Use class to determine jar location, App would construct jar location.  This is no longer necessary since we can use the class to tell
us where the jar is.

Added shutdown script for xd-ec2

Shutdown now uses CI Jars

Update classpath

Artifacts now supported, Tags updated earlier.