* Copying everything back to the python executor workspace
    * For iperf operations, client and server logs are always copied,
      even when successful
    * for xNB run logs, since we could delete completely xNB workspaces
      on the python executor, they are always there
  * Copying back to the xNB server #0 for artifacting
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>