Change some variables and functions name
Change variables name in machine_info.py
Delete a junk code
Delete extra codes
Change position of variables
Change variables name
Change container_list to private variables
Change container_obj_list to private variables
Change test_container_dir_path to private variables
Change test_id to private variable
Change get_output to private function
Change read_file to private function
Change read_file TestMachineInfo to private class
Accept to use test_stub
Fix bugs