---
upgrade:
  - The variables ``nova_requirements_git_repo`` and
    ``nova_requirements_git_install_branch`` have been
    removed in favour of using the URL/path to the
    upper-constraints file using the
    variable ``pip_install_upper_constraints`` instead.
  - The variables ``nova_lxd_requirements_git_repo`` and
    ``nova_lxd_requirements_git_install_branch`` have been
    removed in favour of using the URL/path to the
    upper-constraints file using the
    variable ``pip_install_upper_constraints`` instead.