Merge pull request #226 from frankwhzhang/mmoe_fix_0917

[mmoe] fix phases problems

models/multitask/mmoe/config.yaml

@@ -49,10 +49,12 @@ runner:
   save_checkpoint_path: "increment"
   save_inference_path: "inference"
   print_interval: 1
+  phases: [train]
 - name: infer_runner
   class: infer
   init_model_path: "increment/1"
   device: cpu
+  phases: [infer]
 
 phase:
 - name: train