Redis [BUG] atomic config rewrite breaks the feature

See: https://github.com/redis/redis/pull/7824

This break config rewrite, because of permission problem, as most of the time saving /etc/redis.conf imply write access to /etc, which is usually not allowed.

Comment From: yossigo

We accept this as a known limitation to the approach taken for atomic rewrites. We shall urge everyone to use /etc/redis (or some other dedicated directory) for Redis configuration which would have additional benefits anyway.

Comment From: remicollet

This is really a shame to have such a break / behavior change in a minor release...

This should obviously be part of a major update, and clearly documented in changelog....

Comment From: yossigo

@remicollet I totally agree with you on this, this fix slipped through to 6.0.9 and would have been better off delayed to 6.2. We do our best to be mindful and avoid such mishaps, and at the same time not be too strict and keep a reasonable cadence. Sometimes we get it wrong, like in this case.