Validations:
Must be an identifier, string from 1 to 128 characters containing only alphanumeric characters, dot(.), space, underscore(_), hypen(-) with no leading or trailing space.
範本種類,可用的值:PXELinux, PXEGrub, PXEGrub2, iPXE, provision, finish, script, user_data, ZTP, POAP
Must be String