* fixes exception thrown when sending commands to device
* fixes exception thrown when retrieving current resource instance
* fixes issue where netconf would be configured in some instances when state
was set to absent
* now returns the command string sent to the remote device
* fixes argument name to be netconf_port with alias to listens_on
Updates the junos_netconf module with changes to load the
NetworkModule instead of the get_module factory method. This
update is part of the 2.2 refactor of network modules
