Improve mib get/set function writing method

Signed-off-by: leo-ma <begeekmyfriend@gmail.com>
Fix some bug

Signed-off-by: leo-ma <begeekmyfriend@gmail.com>
Fix some bug

Signed-off-by: leo-ma <begeekmyfriend@gmail.com>
Fix some bug

Signed-off-by: leo-ma <begeekmyfriend@gmail.com>
Update for new mib get/set function method

Signed-off-by: leo-ma <begeekmyfriend@gmail.com>
Merge pull request #32 from leo-ma/mibs

Improve mib get/set function writing method