Make sure that the permissions and username are respected when using all
the rootfs modifiers.
Add tests for change-directory command
Cc: Paul Barker <pbarker@konsulko.com>
(From OE-Core rev: 4aad9531df44d1b0637bd559161702ad86861b46)
Signed-off-by: Ricardo Ribalda Delgado <ricardo@ribalda.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>