a6fcfb28ae
I noticed this while working on change I49ffebcd129990f1835f404d98b51732a32171eb and I realized the scheduler_hints in the legacy filter_properties dict is a bit different than what's in the RequestSpec object, namely that the request validation schema is per-hint. Some require a single value, like 'group', and some accept a list of values, like 'different_host'. Given how nebulous scheduler hints are, we should probably note these in the API reference for the parameter, especially because scheduler hints should not be considered interoperable. Change-Id: I74114fc56bee2bebf4a5f5d6823ec968cad9a8e9