old_contents: #!/usr/bin/env python
  
  from genes.debian.traits import is_debian
  from genes.ubuntu.traits import is_ubuntu
  
  
  def systemctl():
      pass
  
  
  def start():
      pass
  
  
  def stop():
      pass
  
  
  def reload():
      pass
  
new_contents: #!/usr/bin/env python
  from subprocess import Popen
  
  def systemctl():
      pass
  
  
  def start(service):
      Popen(['systemctl', 'start', service])
  
  
  def stop(service):
      pass
  
  
  def restart(service):
      Popen(['systemctl', 'restart', service])
  
  
  def reload():
      pass
  
subject: Add basic systemd functionality