[webapi] update nfc Tcs

- update navigator object name
- change assert_own_property to assert_true
- Change 4 approved cases to designed
- Failure analysis: object excepted attributes missing

Impacted tests(approved): new 0, update 8, delete 4
Unit test platform: [Tizen IVI]
Unit test result summary: pass 3, fail 5, block 0
Merge pull request #695 from zhangjingx/zhangjingx/webapi/nfc_modify

[webapi] Update nfc TCs