* Change error messages in UI during LDAP login (PROJQUAY-4845)
Previously, on installations where LDAP is used, we were telling users whether the username or password was failing when login attempts were made. This might pose a security risk, a malicious user could, via the returned message, identify which users have access to Quay and which don't.
With this change, we return a general message saying the user used wrong credentials instead of providing any details.
* Fixed tests.
* Fix some more tests.
* Readd accidental removal of one assertion.