Fix Pypi script Python version

Fix Pypi build and publish scripts to run
virtualenv with the correct PYTHON_VERSION
specified in the job templates.

Change-Id: I71f61775380ae56c204854ddde254b467e5e16f3
Issue-ID: Issue-ID: CIMAN-137
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
2 files changed