To ensure that the Ansible venv has the right packages installed,
requirements.txt is updated with the appropriate packages.
To ensure that the OS for the deployment host is appropriately
prepared for the Ansible venv creation, to install pip, and
python packages into the venv, OS packages are installed.
Fedora install support is removed from the script as it is an
unsupported platform and unmaintained section.
Change-Id: Ib4e219294f5fd93c6a50814955ab97424a79dafd
17db05965f