os_neutron-only-install-venv-ca3bf63ed0507e4b.yaml

---
upgrade:
  - Installation of neutron and its dependent pip packages will now only
    occur within a Python virtual environment. The ``neutron_venv_enabled``,
    ``neutron_venv_bin``, ``neutron_non_venv_lib_dir`` and
    ``neutron_venv_lib_dir`` variables have been removed.