code: def run_action(self, unit_sentry, action,
                     _check_output=subprocess.check_output,
                     params=None):
          
          self.log.warn('charmhelpers.contrib.amulet.utils.run_action has been '
                        'deprecated for amulet.run_action')
          return unit_sentry.run_action(action, action_args=params)
docs: Translate to amulet's built in run_action(). Deprecated.
  
          Run the named action on a given unit sentry.
  
          params a dict of parameters to use
          _check_output parameter is no longer used
  
          @return action_id.