tree fabea49f865dbfc0949984cefbdc0f6e0dde2930
parent 4dfd78a4e058d106c663b7ae13a5328b39eac0ee
author zhufl <zhu.fanglei@zte.com.cn> 1506061529 +0800
committer zhufl <zhu.fanglei@zte.com.cn> 1506061529 +0800

Move internal helpers to the class that uses them

1. if some helpers are used only by one class, then it needn't
   appear in scenario.manager.py.
2. if some helpers are used outside scenario.manager.py, then it
   shouldn't be defined as internal helpers.

This is to move some internal helpers to the only class that
uses them.

Change-Id: I2543daea8d5e33589ebd909ec31551c77e0faaae