[misc] Update 3 TCs

Impacted TCs num(approved): New 0, Update 3, Delete 0
Unit test Platform: Android
Android test result summary: Pass 3, Fail 0, Block 0
Merge pull request #1118 from wanghongjuan/misc/stablonglast

[misc] Update 3 TCs
Update one cases to stablonglastplayvideo

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 #1120 from wanghongjuan/misc/playvideo

Update one cases to stablonglastplayvideo
[misc]Add 3 tcs for long time test

[Detailed commit message (if have)]
Unit test platform: [Android]
Test Result: Pass 3, Fail 0, Block 0
Merge pull request #1124 from linshen/shenlin/st-audio-1103

[misc]Add 3 tcs for long time test