Fixes #33647 - Return persisted attrs on edit mutation

Fixes #33640 - Improve caching of SettingRegistry#load_values (#8817)

Leverage caching of SettingRegistry#load_values to only recache values that had changed since the last time we've cached values.

Fixes #33469 - current stream for Flatcar

Fixes #33550 - Remove Puppet API endpoints

Fixes #32893 - use setting DSL for General category

This uses our new DSL to define the General settings, this showcases how
to use the new DSL and other categories should follow in the same
release.

Refs #32286 - setting DSL switch preparation

Removes some unused methods and tests.
This also add collections to the old collection registry to work before we hold them in registry only.

Fixes #33419 - Introduce Fact Parser Registry

FactParser class has two purposes in current codebase. It acts as parent
for other fact parses (PuppetFactParser, AnsibleFactParser,
RhsmFactParser...) and also as a registry for registering parsers for
given type/key. This PR introduces FactParserRegistry under...

Fixes #32403 - Add validations to a setting DSL

Add ability to define validation per Setting through DSL.
It tries to keep similar syntax to rails model validations.

Fixes #33426 - changing virtual in ks fixed

Fixes #32880 - Add confirmation modal service (#8619)