[misc-usecase][XWALK-1071] Add a filesystem TC for createfile and readfi...

- Add a filesystem TC for createfile and readfile
- Failure analysis: Function resolve of FileSystemManager interface does not support

Impacted tests(approved): new 1, update 0, delete 0
Unit test platform: [Tizen IVI]
Unit test result summary: pass 0, fail 1, block 0