code: def new_dcos_user(user_id, password):
      
      o_token = dcos_acs_token()
      shakedown.add_user(user_id, password, user_id)
  
      token = shakedown.authenticate(user_id, password)
      dcos.config.set_val('core.dcos_acs_token', token)
      yield
      dcos.config.set_val('core.dcos_acs_token', o_token)
      shakedown.remove_user(user_id)
docs: Provides a context with a newly created user.