Expose saml_provider_id in the users API
Problem to solve
Allow an admin to create/update a user through the API with a SAML identity.
Intended users
GitLab Admins
Further details
Use case
Migrating users from a self-hosted instance of GitLab to gitlab.com where the self-hosted instance utilizes some form of SAML SSO.
Proposal
Expose a SAML group ID in the users API and update the user build and update services to accommodate the newly exposed property in the API
This is a retroactive issue created for !14045 (merged)