feat(obs): docs added

Author: RusselSand

otcextensions/tests/functional/sdk/obs/v1/test_large_files.py

@@ -9,7 +9,6 @@
 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 # License for the specific language governing permissions and limitations
 # under the License.
-import openstack
 import uuid
 from otcextensions.tests.functional import base
 
@@ -40,4 +39,4 @@ def test_01_upload_large_file(self):
             container=self.container,
             obj='largefile'
         )
-        self.client.delete_object(self.object)
+        self.client.delete_object(self.object)

releasenotes/notes/obs-big-files-341231b4e8871f08.yaml

@@ -0,0 +1,6 @@
+---
+upgrade:
+  - |
+    Uploading large files is now more reliable. When using the data parameter, 
+    the SDK can automatically split the upload into chunks, improving stability 
+    and reducing the chance of failures.