features:
  - Added ``list_resource_providers`` function to the Placement API client, which
    allows to retrieve a list of Resource Providers filtering by UUID or parent
    UUID.
    It requires at least version ``1.3`` of placement API for listing resource
    providers that are members of any of the list of aggregates provided.
    It requires at least version ``1.14`` of placement API for listing nested
    resource providers.
  - Added ``get_resource_provider`` function to the Placement API client, which
    allows to retrieve an specific Resource Provider by its UUID.
  - Added ``PlacementAPIVersionIncorrect`` exception class which can be raised
    when requested placement API version is incorect and doesn't support
    requested API feature.