unittest works now also if port 8091 is used
unittest works now also if port 8091 is used

With this change unittest pass also on a machine if the TCP port 8091
is used by an application.

The test just picks one unused TCP port.

mhcomm/pypeman,Zluurk/pypeman,Zluurk/pypeman,Zluurk/pypeman,mhcomm/pypeman,mhcomm/pypeman