[usecase-wrt]update tests.tizen.xml to tests.xml

[Detailed commit message (if have)]
Impacted TCs num(designed): New 0, update 0, deleted 0
Unit test platform: [tizen]
Unit test result summary:update tests.tizen.xml
Merge pull request #892 from linshen/shenlin/update-usecase-tests.xml

[usecase-wrt]update tests.tizen.xml to tests.xml