[wrt][xwalk-2307/2294/2320] Add one TC for wrt-manifestspecificmanu-android-tests

Impacted TCs num(approved): New 1, Update 0, Delete 0
Unit test Platform: Android
Android test result summary: Pass 1, Fail 0, Block 0
Merge pull request #740 from wanghongjuan/wanghongjuan/wrt/manifest-manu

[wrt][xwalk-2307/2294/2320] Add one TC for wrt-manifestspecificmanu-android-tests