The provided "readinessProbe.sh" script fails silently

The problem is that when the scripts fetch an empty list from `/proc/net/tcp` and since it doesn't get an exception it won't fetch `/proc/net/tcp6` where the ports are really are. It then doesn't find any open ports.

The problem here is that the value-variable is not stripped before it is split. This results in all ports equals `None` and then it will always continue - no matter whether the ports are listening or not.