Add force_upload property to flutter/flutter retries. (#2149)

diff --git a/app_dart/lib/src/service/config.dart b/app_dart/lib/src/service/config.dart
index ff923b6..753e660 100644
--- a/app_dart/lib/src/service/config.dart
+++ b/app_dart/lib/src/service/config.dart
@@ -75,8 +75,8 @@
   /// Memorystore subcache name to store [CocoonConfig] values in.
   static const String configCacheName = 'config';
 
-  /// Engine default properties when rerunning a prod build.
-  static const Map<String, Object> engineDefaultProperties = <String, Object>{'force_upload': true};
+  /// Default properties when rerunning a prod build.
+  static const Map<String, Object> defaultProperties = <String, Object>{'force_upload': true};
 
   @visibleForTesting
   static const Duration configCacheTtl = Duration(hours: 12);
diff --git a/app_dart/lib/src/service/luci_build_service.dart b/app_dart/lib/src/service/luci_build_service.dart
index edd440e..3af821d 100644
--- a/app_dart/lib/src/service/luci_build_service.dart
+++ b/app_dart/lib/src/service/luci_build_service.dart
@@ -589,7 +589,7 @@
             target: target,
             task: task,
             priority: kRerunPriority,
-            properties: commit.slug == Config.engineSlug ? Config.engineDefaultProperties : null,
+            properties: Config.defaultProperties,
             tags: tags,
           ),
         ),
diff --git a/app_dart/test/service/luci_build_service_test.dart b/app_dart/test/service/luci_build_service_test.dart
index 900f766..3313adc 100644
--- a/app_dart/test/service/luci_build_service_test.dart
+++ b/app_dart/test/service/luci_build_service_test.dart
@@ -662,7 +662,7 @@
       final ScheduleBuildRequest scheduleBuildRequest =
           (pubsub.messages.single as BatchRequest).requests!.single.scheduleBuild!;
       final Map<String, dynamic> properties = scheduleBuildRequest.properties!;
-      for (String key in Config.engineDefaultProperties.keys) {
+      for (String key in Config.defaultProperties.keys) {
         expect(properties.containsKey(key), true);
       }
       expect(scheduleBuildRequest.priority, LuciBuildService.kRerunPriority);