Fixing some hub issues found by pylint

[Ralph Bean]

On Wed, May 13, 2015 at 05:25:41PM -0400, Mike McLean wrote:
>  hub/kojihub.py | 37 ++++++++++++++++++++++---------------
>  1 file changed, 22 insertions(+), 15 deletions(-)

Nice!  There were some good finds in there.
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