Debug the upload issue

- previously the CI test failed at uplaading .rec to s3.
- use absolute path instead

introduction_to_applying_machine_learning/visual_object_detection/visual_object_detection.ipynb

@@ -200,7 +200,7 @@
     "!mkdir -p $RAW_DATA_PATH\n",
     "!aws s3 cp $original_data $RAW_DATA_PATH\n",
     "!mkdir -p $DATA_PATH\n",
-    "os.system('unzip {} -d {}'.format(os.path.join(RAW_DATA_PATH, 'NEU-DET.zip'), RAW_DATA_PATH))\n",
+    "os.system('unzip -qq {} -d {}'.format(os.path.join(RAW_DATA_PATH, 'NEU-DET.zip'), RAW_DATA_PATH))\n",
     "\n",
     "# Folders for training data and output artifacts in s3\n",
     "prefix = name_from_base('defect-detection')\n",
@@ -468,10 +468,10 @@
     "train_channel = f\"{prefix}/OD_Type1_train\"\n",
     "validation_channel = f\"{prefix}/OD_Type1_validation\"\n",
     "sagemaker_session.upload_data(\n",
-    "    path=\"neu_det/data_train.rec\", bucket=bucket, key_prefix=train_channel\n",
+    "    path=DATA_PATH+\"/data_train.rec\", bucket=bucket, key_prefix=train_channel\n",
     ")\n",
     "sagemaker_session.upload_data(\n",
-    "    path=\"neu_det/data_val.rec\", bucket=bucket, key_prefix=validation_channel\n",
+    "    path=DATA_PATH+\"/data_val.rec\", bucket=bucket, key_prefix=validation_channel\n",
     ")\n",
     "\n",
     "s3_train_data = f\"s3://{bucket}/{train_channel}\"\n",