Switch the kpi module to use flattened data
Switch the kpi module to use flattened data

By extending datasource in the kpi module collectionOptions. This is the
first time one of the server modules uses collectionOptions.

alphagov/spotlight,tijmenb/spotlight,tijmenb/spotlight,alphagov/spotlight,keithiopia/spotlight,keithiopia/spotlight,tijmenb/spotlight,alphagov/spotlight,keithiopia/spotlight