[misc] Add a usecase for time

Impacted TCs num(approved): New 1, Update 0, Delete 0
Unit test Platform: [Tizen IVI]
Test result summary: Pass 1, Fail 0, Blocked 0
[misc] Update WRT usecases for wrt-usecase-tizen-tests
[wrt] Update cases for format and test steps
Merge pull request #427 from kangxu/kangxu/wrt/wrt-integration-android-tests/updateSteps

[wrt] Update cases for format and test steps
Merge pull request #428 from wanghongjuan/wanghongjuan/misc/wrt-usecase
Merge pull request #412 from JianfengXu/xujf/misc/time

[misc] Add a usecase for time
[wrt] Update test entry for 2 cases
[wrt] Update expect result for test step
[wrt]fix wgt launch error,update wrt-commoni18n-webapp-tests config.xml

[Detailed commit message (if have)]
Impacted TCs num(approved): New 0, update 3, deleted  0
Unit test platform: [tizen]
Unit test result summary: Pass 3 , Fail  0, Blocked 0
Merge pull request #429 from linshen/update-i18n-webapp

[wrt]fix wgt launch error,update wrt-commoni18n-webapp-tests config.xml
Merge pull request #431 from kangxu/kangxu/wrt/wrt-rtlib-android-tests/updateEntry

[wrt] Update test entry for 2 cases
Merge pull request #433 from kangxu/kangxu/wrt/wrt-packertool-android-tests/updateSteps

[wrt] Update expect result for test step