MAR-226: Harmonise the HTTP header override parameter between the PHP and WSGI website roles:

- Use the new naming/syntax introduced in the php_website role since
it implies less dependence on the backend application (more generic
name for it), and is a little bit saner in terms of not having to
provide quotes as part of the value.

MAR-192: Fix incorrect prompt for wsgi_website virtual environments:

- Ensure that the virtualenv indicator string ends with a whitespace.
- The virtualenv prompt parameter behaves slightly different between
the versions of Debian 11 Bullseye and Debian 12 Bookworm - the
former being a bit more user-friendly.
- Recreate virtual environment if the prompt does not match-up.

MAR-154: Drop suppor for Python 2.7 from the wsgi_website role:

- Mostly a matter of dropping the Python version parameter, and
updating some package versioning to account for Python 3 only.

MAR-170: Always enforce use of HTTPS in the wsgi_server role:

- Dropped the enforce_https parameter.
- Updated tests.
- Updated release notes.

MAR-159: Added wsgi_requirements_in parameter to wsgi_website role:

- Added the parameter as optional.
- Updated role reference documentation.
- Updated release notes.
- Updated tests.

MAR-159: Drop the use futures_version and gunicorn_version parameters from the wsgi_website role:

- Remove related tasks, Gunicorn/Futures should instead be installed
via the requirements file instead.
- Restructure tasks, moving them from the requirements.yml into
main.yml.
- Small typo fix for one of the variables.

MAR-159: Set-up defaults for wsgi_requirements and update tests:

- Set defaults for the wsgi_requirements parameter (for running using
Python 2).
- Drop the use of futures_version and gunicorn_version from the
Molecule tests.
- Updated and deduplicated tests related to testing of
installed/requested futures and gunicorn package versions.

MAR-162: Make the https_tls_certificate and https_tls_key parameters mandatory in wsgi_website role:

- Dropped the defaults from wsgi_server role.
- Updated group variables in role tests.
- Changed the key/certificate file extensions to be more descriptive.
- Updated role reference documentation.
- Updated usage instructions to include the mandatory parameters.

MAR-132: Workarounds for wsgi_website Python virtual environment in Debian Stretch:

- Manually install setuptools in Python virtual environment on Debian
Stretch, otherwise the pkg-resources==0.0.0 package will mess with
pip freeze etc.
- Add back installation of futures package, even on Python 3 (since it
does not cause any harm).
- A small cleanup of how requirements are treated will be done in
separate ticket.

MAR-131: Added support for specifying Python version in wsgi_website role:

- Introduced additional role parameter for specifying the Python
version.
- Updated tests to verify new functionality.
- Fixed existing tests to account for differences between Python 2 and
Python 3 - including changes to WSGI test applications.
- Updated documentation, documenting new parameter and fixing one
minor typo.
- Updated release notes.
- Bumped default version of Gunicorn/futures used.

MAR-129: Updated wsgi_website role for Ansible 2.5.x and new Molecule:

- Include top-level linting configuration in test configuration file.
- Fixed linting errors.
- Updated Ansible deprecation warnings related to use of
state=installed with apt module.
- Updated how hosts are being referenced in tests.
- Rename the 'ss' utility in order to properly test socket
connectivity as a workaround for Testinfra bug.

MAR-122: Fixed handling of complex package versions for pip with Ansible 2.x:

- Use list for installing specific version of pip in the "pipreqcheck" virtual
environment in common role.
- Removed superficious (and incorrect) definition for application admin username
in wsgi_website role.
- Updated test playbook for wsgi_website role to test the fix.
- Switched to passing-in package list for installing packages in virtual
environment instead of using "with_items" in wsgi_website role.

MAR-114: Moved set_fact for wsgi_website and php_website roles:

- Moved set_fact for setting application admin, user, and home directory into
defaults/main.yml.
- Updated test playbook for wsgi_website to fixate the ptpython and dnspython
versions (including their dependencies).
- Updated tests for wsgi_website to use new fixated versions for ptpython,
dnspython, and their dependencies.