Update UIImageView.h

Update param name
Merge pull request #6843 from favorcode/v3

[ci skip]Update UIImageView.h param name
[ci skip]
issue #5255:Add Sprite3D test cases for Lua
Merge branch 'v3' of https://github.com/cocos2d/cocos2d-x into v3_fix
Merge pull request #6847 from samuele3hu/v3_fix

issue #5255:Add Sprite3D test cases for Lua
[AUTO]: updating luabinding automatically
Merge pull request #6849 from CocosRobot/update_lua_bindings_1400586331

[AUTO]: updating luabinding automatically
[AUTO][ci skip]: updating cocos2dx_files.json
Merge pull request #6850 from CocosRobot/update_cocosfiles_1400586569

[AUTO][ci skip]: updating cocos2dx_files.json