Add configuration for Qpid Dispatch router.

qdrouterd.conf should exist in /etc/qpid-dispatch/

Configurable options are:

  $container_worker_threads : the number of threads used by Dispatch
  $container_name:          : the name for the container
  $ssl_profile_name         : the SSL profile name to use
  $listener_address         : the interface name and port for incoming
                            : connections
  $listener_port            :
  $sasl_mechanisms          : the list of SASL mechanisms to use
  $router_mode              : either "standalone" or "interior"
  $router_id                : the router name