Resolved these outstanding issues:

+ DVPL-3654: splunklib.searchcommands | logging_configuration option is broken

    Verified with automated unit tests and ad-hoc integration tests

+ DVPL-3895: splunklib.searchcommands | Exceptions within user code should log full stack trace and exit with non-zero status code

    Verified with automated unit tests and ad-hoc integration tests

Signed-off-by: David Noble <dnoble@splunk.com>