SimpleActionState uses inappropriate default outcomes value

[MarkWannaFly]

In simple_action_state.py, the construction of class SimpleActionState is as follows:

class SimpleActionState(RosState):
    """Simple action client state.

    Use this class to represent an actionlib as a state in a state machine.
    """

    # Meta-states for this action
    WAITING_FOR_SERVER = 0
    INACTIVE = 1
    ACTIVE = 2
    PREEMPTING = 3
    COMPLETED = 4

    def __init__(self,
            node,
            # Action info
            action_name,
            action_spec,
            # Default goal
            goal = None,
            goal_key = None,
            goal_slots = [],
            goal_cb = None,
            goal_cb_args = [],
            goal_cb_kwargs = {},
            # Result modes
            result_key = None,
            result_slots = [],
            result_cb = None,
            result_cb_args = [],
            result_cb_kwargs = {},
            # Keys
            input_keys = [],
            output_keys = [],
            outcomes = [],
            # Timeouts
            exec_timeout = None,
            preempt_timeout = Duration(seconds=60.0),
            server_wait_timeout = Duration(seconds=60.0)
            ):

    RosState.__init__(self, node, outcomes=['succeeded','aborted','preempted'])

This will cause problem when I define outcomes different from ['succeeded','aborted','preempted']. It should look like:

RosState.__init__(self, node, outcomes=outcomes)