feat:广告模型定时更新脚本优化

ad/02_ad_model_update_twice_daily.sh

@@ -61,7 +61,7 @@ global_init() {
         local_model_file_path=${MODEL_HOME}/${model_name}_${train_end_str}.txt
         local_change_model_file_path=${MODEL_HOME}/${model_name}_${train_end_str}_change.txt
         max_hour=12
-    elif [ $current_hour -ge 20 ]; then 
+    elif [ $current_hour -ge 16 ]; then 
         train_begin_str=${today_early_1}22
         train_end_str=${today}13
         predict_begin_str=${today}14