I applied some review edits to the USERADD_PACKAGES and
USERADD_PARAM variables from Paul. Additionally, I added descriptions
for the GROUPADD_PARAM and GROUPMEMS_PARAM variables.
(From yocto-docs rev: 0c52a79efb2cf7c708ea989ab307be04f27484dc)
Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>