remove command line argument after launch

pipelet/launchers.py

@@ -491,6 +491,7 @@ echo "worker returned at $(date)"
 
 if __name__ == "__main__":
     import optparse
+    import sys
     parser = optparse.OptionParser()
     parser.add_option('-H', '--host', metavar='hostname',
                       help='hostame or adress of the scheduler server', default=socket.gethostname())
@@ -506,6 +507,7 @@ if __name__ == "__main__":
     name  = options.logfile.split("_")[-1]
     wl    = init_logger (name, options.logfile)
     w = worker.ProcessWorker(address=(options.host,options.port), authkey=options.secret,logger=wl)
+    sys.argv=[sys.argv[0]] ## do not propage command line argument to segment script
     w.run()