Create prepocessor_config.json

Model_DenseNet/preprocessor_config.json

@@ -0,0 +1,7 @@
+{
+  "do_resize": true,
+  "size": 224,
+  "do_normalize": true,
+  "image_mean": [0.485, 0.456, 0.406],
+  "image_std": [0.229, 0.224, 0.225]
+}