Usage of "once" argument is incorrect (inverted) in async Sentinel client

[felipou]

I was just taking a look at the source code and saw this, the condition seems inverted:

redis-py/redis/asyncio/sentinel.py

Lines 222 to 229 in 66a4d6b

	if once:
	tasks = [
	asyncio.Task(sentinel.execute_command(*args, **kwargs))
	for sentinel in self.sentinels
	]
	await asyncio.gather(*tasks)
	else:
	await random.choice(self.sentinels).execute_command(*args, **kwargs)

In the non-async Sentinel it seems correct:
https://github.com/redis/redis-py/blob/master/redis/sentinel.py#L202-L206

If needed, I can help with a PR (I just need to look at the tests to see if we can create one that would catch this).

[dvora-h]

@felipou Thanks for reporting this! We are always happy to receive PR's contributions, so go for it...

[felipou]

Ok! I've just created a PR for this: #2718

[felipou]

My PR was merged, so I'm closing this issue! Thanks @dvora-h !