fix bos download (PaddlePaddle#9023)

* fix bos download

* add test

* update

Author: westfish

paddlenlp/utils/download/bos_download.py

@@ -190,6 +190,9 @@ def bos_download(
 
     storage_folder = os.path.join(cache_dir, repo_id)
     os.makedirs(storage_folder, exist_ok=True)
+    if subfolder is not None:
+        storage_sub_folder = os.path.join(storage_folder, subfolder)
+        os.makedirs(storage_sub_folder, exist_ok=True)
 
     if url is None:
         url = bos_url(repo_id, filename, repo_type=REPO_TYPE, endpoint=endpoint)

tests/transformers/load_subfolder/test_image_processor.py

@@ -58,3 +58,11 @@ def test_clip_load(self):
         clip_processor = AutoImageProcessor.from_pretrained(
             "aistudio/paddlenlp-test-model", subfolder="clip-vit-base-patch32", from_aistudio=True
         )
+
+
+class ImageProcessorSubfolderLoadTester(unittest.TestCase):
+    def test_clip_subfolder_load(self):
+        logger.info("Download model with subfolder")
+        clip_processor = CLIPImageProcessor.from_pretrained(  # noqa: F841
+            "runwayml/stable-diffusion-v1-5", subfolder="feature_extractor"
+        )