10b62ad Make assert_error compatible with Python 3.6

1 file Authored by cheimes a month ago , Committed by rcritten a month ago ,
    Make assert_error compatible with Python 3.6
    
    The re.Pattern class was introduced in Python 3.7. Use duck-typing to
    distinguish between str and re pattern object.
    
    Fixes: https://pagure.io/freeipa/issue/8179
    Signed-off-by: Christian Heimes <cheimes@redhat.com>
    Reviewed-By: Sergey Orlov <sorlov@redhat.com>