[Bluetooth TCT] move some assertion checks

Some TCT test cases verify that Web API returns 'undefined'.
In few cases, this check is done in the Web API callback and
so before the Web API has returned 'undefined'.

BUG=XWALK-2090
[misc][wrt] Update usecase common
[webapi][XWALK-2103]Update the vauleToSet for audiosystem

- Fail Reason: the error callback is invoked.

Impacted TCs num(approved): New 0, Update 4, Delete 0
Unit test Platform: [Tizen IVI]
Test result summary: Pass 0, Fail 4, Blocked 0
Merge pull request #453 from JianfengXu/xujf/audiosystem/2103

[webapi][XWALK-2103]Update the vauleToSet for audiosystem
Merge pull request #457 from xinliux/xinliux/webapi/see-harness

[webapi] Update sse w3c TCs resource path
[wrt] Add new suite for wrt-manifest-android-tests
[wrt] Update test.py and cases for wrt-packertoolauto-android-tests
Merge pull request #459 from kangxu/kangxu/wrt/wrt-packertoolauto-android-tests/update

[wrt] Update test.py and cases for wrt-packertoolauto-android-tests
Merge pull request #420 from clecou/bluetooth_asserts

[Bluetooth TCT] move some assertion checks
Merge pull request #452 from wanghongjuan/wanghongjuan/misc/common

[misc][wrt] Update usecase common
Merge pull request #458 from kangxu/kangxu/wrt/wrt-manifest-android-tests/new

[wrt] Add new suite for wrt-manifest-android-tests