Datastore customisations configuration class

Required

The IDatastoreCustomisationsConfig interface has been renamed to IDatastoreConfiguratorSetup and now creates and exposes an instance of IDatastoreConfigurator as a Spring Bean by default.

Override the addModifications() and buildSchemas() methods, providing entrypoints for defining modifications to initial definitions and instantiating schema classes, respectively. For an example, see Datastore configuration classes/Optional.