---
features:
  - Add DriverFilter and GoodnessWeigher to manila's scheduler.
    These can use two new properties provided by backends, 'filter_function'
    and 'goodness_function', which can be used to filter and weigh qualified
    backends, respectively.
upgrade:
  - To add DriverFilter and GoodnessWeigher to an active deployment, their
    references must be added to the filters and weighers sections on
    entry_points.txt.