[SavedModel Fingerprinting] Attempt #3: Turn fingerprinting on by default.

tensorflow/community#415

PiperOrigin-RevId: 479117206

Author: Monica Song

tensorflow/core/config/flag_defs.h

@@ -39,7 +39,7 @@ class Flags {
   TF_DECLARE_FLAG(
       op_building_optimization, true,
       "Optimize tf.Operation building for faster tf.function tracing.");
-  TF_DECLARE_FLAG(saved_model_fingerprinting, false,
+  TF_DECLARE_FLAG(saved_model_fingerprinting, true,
                   "Add fingerprint to SavedModels.");
   // LINT.ThenChange(//tensorflow/core/config/flags_api_wrapper.cc)
 };

tensorflow/python/saved_model/save_test.py

@@ -1116,9 +1116,9 @@ def initialize():
 class FingerprintingTests(test.TestCase):
 
   def test_toggle_flag(self):
-    self.assertFalse(flags.config().saved_model_fingerprinting.value())
-    flags.config().saved_model_fingerprinting.reset(True)
     self.assertTrue(flags.config().saved_model_fingerprinting.value())
+    flags.config().saved_model_fingerprinting.reset(False)
+    self.assertFalse(flags.config().saved_model_fingerprinting.value())
 
 
 if __name__ == "__main__":