This adds an option to match domains by regex including two special named matching groups. User matches the username of the user, and Group matches the groups a user is a member of. These are both case-insensitive and you can see examples in the docs.
This commit replaces github.com/spf13/viper with github.com/knadh/koanf. Koanf is very similar library to viper, with less dependencies and several quality of life differences. This also allows most config options to be defined by ENV. Lastly it also enables the use of split configuration files which can be configured by setting the --config flag multiple times.
Co-authored-by: Amir Zarrinkafsh <nightah@me.com>
* [MISC] Validate all sections of ACLs on startup
This change ensure that all sections of the `access_control` key are validated on startup.
* Change error format to clearly identify values
* added support for listing multiple domains and multiple subjects
* updated documentation to show use of multiple domains and subjects
* updated config.template.yml to display multiple domains as a list
* updated config.template.yml to display multiple subjects as a list
* updated docs/configuration/access-control.md to display multiple domains as a list
* updated docs/configuration/access-control.md to display multiple subjects as a list
* removed redundant check that always returned true
* Commentary definition for `weak`
