ALLURE_LOGIN_PRIMARY and switch to another login method

[timansky]

there is ALLURE_LOGIN_PRIMARY to switch default login method
another method is to use /login/ldap (for example) or login/oauth2/... uri

what is the uri to built-in method?
if i switch default method is not possible to login thru built-in autocreated admin user

[baev]

/login/system