Fix CA replica install on DL1
    
    Dogtag requires Directory Manager password for its installation.
    On Domain Level 1 a special password for Directory Manager is
    created and used during the installation. However, by importing
    the real DM password from remote LDAP, we can no longer use
    the temporary password from the replica installation.
    
    https://fedorahosted.org/freeipa/ticket/6392
    
    Reviewed-By: Jan Cholasta <jcholast@redhat.com>