[8.x](backport #42329) Prevent 'thundering herd' issue with the scale preset #42410
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Add backoff settings to the `scale` performance preset, as described in elastic/elastic-agent#4469, to reduce load on large deployments. (cherry picked from commit 5fcc26b)
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Add backoff settings to the
scaleperformance preset, as described in elastic/elastic-agent#4469, to reduce load on large deployments.My code follows the style guidelines of this projectI have commented my code, particularly in hard-to-understand areasI have made corresponding change to the default configuration filesI have added tests that prove my fix is effective or that my feature worksCHANGELOG.next.asciidocorCHANGELOG-developer.next.asciidoc.Disruptive User Impact
If users have already set an output backoff while using the scale preset, this will override it (and possibly reduce the effective backoff).
However, this reduces cluster overload in the more common case that users have default backoff settings.
Related issues
This is an automatic backport of pull request #42329 done by [Mergify](https://mergify.com).