compat-manage: behave the same for all users
    
    Due to LDAP connection refactoring, compat-manage would have behaved
    differently for root and for other users even though it requires
    the directory manager password. This is caused by it trying to do
    external bind when it does not have the DIRMAN password which was
    previously not supplied.
    
    https://pagure.io/freeipa/issue/6821
    
    Reviewed-By: Martin Basti <mbasti@redhat.com>