save model

recommend-model-produce/src/main/python/models/dssm/config_ps_hdfs.yaml

@@ -13,7 +13,7 @@
 # limitations under the License.
 
 runner:
-  train_data_dir: "/dyp"
+  train_data_dir: "/dypdemo"
   train_reader_path: "bq_reader_train"  # importlib format
   train_batch_size: 8
   model_save_path: "output_model_dssm"