[AMQ Broker] The provided "readinessProbe.sh" script fails silently

Issue

• the provided readinessProbe.sh 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.