We no longer regard the autoscaling APIs experimental though they are
only intended for use by ESS/ECE/ECK. This commit updates the docs
to reflect this and adds a minimal set of documentation for the
feature.
Co-authored-by: James Rodewig <40268737+jrodewig@users.noreply.github.com>
Removed the autoscaling feature flags, autoscaling is now on by default
(though it requires an external system to handle the autoscaling
events). Added experimental notice to all autoscaling related
documentation pages.
Relates #51191
Renamed decision API to capacity. Responses now prefer objects/maps over
arrays. Removed mention of tier, using policies as the outer map and
total for the policy-wide total capacity.