ekos shutdown

Timing race sometinms if a flip is scheduled during shutdown. The mount is not parked.

Big thanks to @Andy on the stellarmate discord for the workaround/fix...

Hi, thanks for the log and files, that made it easy to track down.

Workaround until the fix is released: in `/home/steve/Pictures/my_queue.kstarsqueue`, add this as the first entry of the park task's `"actions"` list, before the TELESCOPE_PARK step:

    {

"type": "EVALUATE",
"device": "EQMod Mount",
"property": "EQUATORIAL_EOD_COORD",
"element": "STATE",
"property_type": 4,
"condition": 1,
"target": "Busy",
"margin": 0,
"timeout": 180,
"retries": 0,
"failure_action": 1
},

It waits until the mount has stopped slewing (max 180 s), then parks. Without a flip it passes at once, and if it ever times out the park is still sent, so it's never worse than now. In the simulator the flip finished and the mount parked. Keep a backup of the file: re-creating the park task from the template removes the extra step. In the morning, the scheduler log should show "Pre-shutdown queue completed successfully".