obey new Fedora Python package naming guidelines
    
    https://pagure.io/packaging-committee/issue/686
    https://fedoraproject.org/wiki/Packaging:Python#Dependencies
    
    There is now also a Taskotron check in Fedora which complains
    about this being wrong currently:
    
    https://taskotron.fedoraproject.org/artifacts/all/60ed176a-5646-11e7-b089-5254008e42f6/task_output/output.log
    
    (cherry picked from commit 2b46d40d7343035bc8fdf5963c33db655b28ac28)
    
    Change-Id: I4b6ccaf72c3f473b0975f0e70d675dfecd46c6cb