[Stability] Improve one manual test to auto for wrt-stablonglastmanu-android-tests

Impacted TCs num(approved): New 0, Update 1, Delete 0
Unit test Platform: Android
Android test result summary: Pass 1, Fail 0, Block 0]
Merge pull request #1217 from wanghongjuan/stability/stablongmaun

[Stability] Improve one manual test to auto for stablonglastmanu