In this PR we remove the general SettingService cache, as it will not
work across multiple horizontal unleash instances, events are not
published across.
We also fix the CORS origin to:
- Access-Control-Allow-Origin set to "*" if no Origin is configured
- Access-Control-Allow-Origin set to "*" if any Origin is configured to
"*"
- - Access-Control-Allow-Origin set to array and have the "cors"
middleware to return an exact match on the user provided Origin.
Co-authored-by: Fredrik Oseberg <fredrik.no@gmail.com>