meson.build will fall back to greping /etc/login.defs for values of these
if they're not set. Different distros set them (Centos 7/8 does, Ubuntu
does not) so output was not deterministic. Avoid this by setting to the
default values. We now match the vaules from login.defs from shadow.
(From OE-Core rev: 77a6ac0ac266d71e4fe67fd332662081f30cd7bf)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
4fab901c65