CLI does not exit on `process.exit`

[rangelfinal]

If the server exists using a process.exit call, the CLI hangs forever.
No logs are shown during or after the process.exit call.

[luiseduardobrito]

This may be related to problems in the ts-framework unmount lifecycle, which was fixed by ts-framework#33. The unmount always closed process with 1 as result code with a timeout as default. This broke some projects unit testing.