[webapi] Update 52 Tcs for nativefilesystem

- Update 52 Tcs for nativefilesystem

Impacted tests(approved): new 0, update 52, delete 0
Unit test platform: [Android]
Unit test result summary: pass 52, fail 0, block 0
Merge pull request #338 from yunxliu/yunxliu/webapi/rewrite_nativefilesystem

[webapi] Update 52 Tcs for nativefilesystem