* Adding documentation for Okta OIDC provider.
* additional clean up.
* Clearer heading
* Forgot a word.
* updated documentation based on ReillyProcentive review.
* Per steakunderscore review: removed defaults. Removed extra hardening steps (expiration, https only etc) not directly related to setting up Okta w/ OIDC
* Initial version of OIDC based GitLab provider
* Add support for email domain check to GitLab provider
* Add gitlab.com as default issuer for GitLab provider
* Update documentation for GitLab provider
* Update unit tests for new GitLab provider implementation
* Update CHANGELOG for GitLab provider
* Rename GitLab test access token as response to linter