ldap_sso 8.x-4.0-beta1

Finally ldap_sso has test coverage over it's primary behavior in an end-to-end test. It should now be possible to more easily reproduce real-world issues with this and provide a more stable integration.

Most importantly in this release the seamless mode has been completely rewritten, the sso_login_running cookie is no longer needed and we are not doing the redirect to the login controller anymore but rather doing it internally. This should reduce a large number of issues and problems users have had and simplify maintenance.

That being said: This is a major change in behavior for ldap_sso so regressions can occur. Please open tickets as needed and we'll try to smooth those out in early 2021.

Relevant issues:

• Issue #2742941: Write test cases for ldap_sso: Refactor for testing and avoiding redirects.
• Issue #2889863: LDAP conflicts with Masquerade 2.0: LDAP conflicts with Masquerade 2.0
• Issue #3171058: Config not being pulled through for excluded hosts & paths by t0mmm: Config not being pulled through for excluded hosts & paths
• Issue #3168581: Not working with language prefix: Not working with language prefix

Note that we are temporarily depending on ldap-4.x-dev until beta2 of ldap is out.