Added a convenience script for upgrading python locally.

python-upgrade/
python-upgrade/README.md
python-upgrade/upgrade-sandbox-python.sh
----------------------------------------
  o The upgrade-sandbox-script will install OS packages.
  o Clone a git sandbox.
  o Upgrade/install a virtualenv at a specified version.

Signed-off-by: Joey Armstrong <jarmstrong@linuxfoundation.org>
Change-Id: Ic939ab53c329d689e25c139b3bec9c00b4b9c68a
5 files changed