If pam is not present in DISTRO_FEATURES, then exclude
util-linux-runuser from PACKAGES to avoid its libpam dependency.
(From OE-Core rev: 9ba9807fc7c19938022c37641b171464699fc742)
Signed-off-by: Ioan-Adrian Ratiu <adrian.ratiu@ni.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>