* Verify DNS SANs if PermittedDNSDomains is set
* Use DNSNames check and not PermittedDNSDomains on leaf certificate
* Document the check
* Add RFC link
* Test for success case
* fix the parameter name
* rename the test
* remove unneeded commented code
This removes all references I could find to:
- credential provider
- authentication backend
- authentication provider
- auth provider
- auth backend
in favor of the unified:
- auth method