Fixed issues with PodIds containing .
Exit JVM if an error is thrown or the main loop exits

If we need timeouts they should be controlled by USI specific config,
and not by changing Akka defaults. Doing the latter could lead to
surprising behavior in frameworks that use Akka.

Further, the override order for reference.conf files is
non-deterministic. Depending on the packaging method used, one
reference.conf file (from akka) could take precendence over another, and
lead to non-deterministic config.

Avoid.