f31d73b py3: upgradeinstance: open dse.ldif in textual mode

1 file Authored by mbasti 7 years ago, Committed by jcholast 7 years ago,
    py3: upgradeinstance: open dse.ldif in textual mode
    
    ldap ldif parser requires to have input file opened in textual mode
    
    https://fedorahosted.org/freeipa/ticket/4985
    
    Reviewed-By: Jan Cholasta <jcholast@redhat.com>