* Canonicalize module_defaults actions and action_groups pre-fork and cache them on the play
* Call get_action_args_with_defaults with the resolved FQCN plugin and don't pass the redirect list
* Add validation for action_group metadata and a toggle to disable the warnings
* Handle groups recursively referring to each other
* Remove special-casing for non-fqcn actions in module_defaults groups
* Error for actions and groups in module_defaults that can't be resolved
* Error for fully templated module_defaults
* Add integration tests for action_groups
* Changelog
