Return the tuple (action, repeat) for the alert.

        - action is a command line
        - repeat is a bool

def get_limit_action(self, criticity, stat_name=""):
        """Return the tuple (action, repeat) for the alert.

        - action is a command line
        - repeat is a bool
        """
        # Get the action for stat + header
        # Exemple: network_wlan0_rx_careful_action
        # Action key available ?
        ret = [(stat_name + '_' + criticity + '_action', False),
               (stat_name + '_' + criticity + '_action_repeat', True),
               (self.plugin_name + '_' + criticity + '_action', False),
               (self.plugin_name + '_' + criticity + '_action_repeat', True)]
        for r in ret:
            if r[0] in self._limits:
                return self._limits[r[0]], r[1]

        # No key found, the raise an error
        raise KeyError