Currently only VERSION_ID field is sanitized, but os-release (5) has
more fields with the same requirement. Moreover, those fields come
unquoted in most distributions, because quotes are not needed for a
values without whitespaces.
(From OE-Core rev: f451c68667cca8a1883ceddb66dd2834b18252a8)
Signed-off-by: Vyacheslav Yurkov <uvv.mail@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>