cba678d travis: fix pylint execution with py3

Authored and Committed by mbasti 2 years ago
    travis: fix pylint execution with py3
    
    Python version was placed at wrong position, py3 hasn't been tested at
    all in travis.
    
    https://pagure.io/freeipa/issue/4985
    
    Reviewed-By: Stanislav Laznicka <slaznick@redhat.com>
    
        
file modified
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