At the moment the wsgi_website role supports only Python 2. Since Python 2 is bound to reach end-of-life soon, and many applications have already moved towards Python 3 only, it would be useful to add ability to set-up a Python 3 virtual environment for WSGI applications (via the wsgi_website role).

This would also affect the common role functionality related to checking for available package updates in the Python virtual environments.

The following should be done:

• Extend the wsgi_website role to include support for Python 3 (making it configurable).
• Extend the common role to properly support package update checks for both Python 2 and Python 3 roles.
• Update role reference documentation.
• Update usage instructions to mention support for Python 3.