PyroServer: fixed naming of class, and reorganized methods in order to ease subclassing, in case of customization of service publication on the local network (i.e. zeroconf)

<?xml version='1.0' encoding='utf-8'?>
<BeremizRoot xmlns:xsd="http://www.w3.org/2001/XMLSchema" URI_location="LOCAL://">
  <TargetType/>
</BeremizRoot>