Adds ability to use delete-expunge operations to the JPA Starter Server.

src/main/resources/application.yaml

@@ -71,6 +71,7 @@ hapi:
 #    default_encoding: JSON
 #    default_pretty_print: true
 #    default_page_size: 20
+#    delete_expunge_enabled: true
 #    enable_repository_validating_interceptor: false
 #    enable_index_missing_fields: false
 #    enable_index_contained_resource: false