Imagenet short tests (#6136)

* Add short imagenet tests (taken from seemuch)
- also rename to match go forward naming

* fix method name

* Update doc strings.

* Fixe gpu number.

* Add fill_objects

* fixed calling wrong class in super.

* fix lint issue.

official/resnet/keras/keras_imagenet_benchmark.py

@@ -154,6 +154,12 @@ class Resnet50KerasBenchmarkBase(keras_benchmark.KerasBenchmark):
 
     self._run_benchmark()
 
+  def fill_report_object(self, stats):
+    super(Resnet50KerasBenchmarkBase, self).fill_report_object(
+        stats,
+        total_batch_size=FLAGS.batch_size,
+        log_steps=FLAGS.log_steps)
+
 
 class Resnet50KerasBenchmarkSynth(Resnet50KerasBenchmarkBase):
   """Resnet50 synthetic benchmark tests."""