4e574cd Fixed import error

1 file Authored by Oleg Fayans 7 years ago, Committed by mbasti 7 years ago,
    Fixed import error
    
    assert_error was lately transfered from test_caless.py to tasks.py, which
    started to cause import errors in replica promotion tests
    
    Reviewed-By: Martin Basti <mbasti@redhat.com>