Prototype Okta SCIM-SAML linking
When users are created via Okta SCIM we expect them to be able to login with SAML, and when existing users have SAML set up we expect SCIM operations to recognise them instead of creating duplicates. Currently this would not be the case because we assume that the SAML NameID and SCIM ID will be the same.
- Create prototype to implement this, based on the discussion in #11536 (closed).
- Test SAML and SCIM configuration using Okta for a test group on GitLab.com.
- Document the configuration and testing process with a video.