9a4f9a4 tox: force pytest version to the 4.6.4

1 file Authored by abiagion 4 years ago, Committed by rcritten 4 years ago,
1 file changed. 5 lines added. 0 lines removed.
    tox: force pytest version to the 4.6.4
    
    As of today, latest version of pytest (5.0.0), released on June 28th
    is freezing tox on py36 right after the test session starts.
    
    Version 4.6.4 was released on the same date.
    
    Signed-off-by: Armando Neto <abiagion@redhat.com>
    Reviewed-By: Rob Crittenden <rcritten@redhat.com>
    
        
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