Enabling wse_config results in cache_config not being used

Problem/Motivation

WSE Config decorates both config.storage and config.storage.active in such a way that config is no longer cached. That means sites that have moved the config cache to redis or memcache no longer benefit. Sites using database caching are unaffected because cache_config and config are the same.

Steps to reproduce

Install wse_config

Proposed resolution

Consider the approach and potentially make wse_config using the ability of config overriders to affect the cache key used in cache config. This might result in a simpler approach to caching as a whole.

Remaining tasks

TBD

User interface changes

N/a

API changes

TBD

Data model changes

TBD