useradd.bbclass: Strip trailing ';' in cmd params
When there are more than 1 packages in a recipe requiring useradd
services, they are concatnated and a ';' is inserted just after
each of the users being added by the packages. A situation arises
in cases where this is controlled by PACKAGECONFIG then we add a
';' separator in the USERADD_PARAM value itself for each packagecofig
since we do not know which one will be picked, we end up in situation
where the final string returned from get_all_cmd_params() appears to be
a; ; b; c;
and then the logic which uses these cmds triggers with ';' as separator
but in this case it will fail after executing useradd 'a' because the next
cmd it will call will be just a whitespace
This is highlighted by the systemd patch to add more users as needed
by systemd 229 components.
(From OE-Core rev:
e8d4356c38e3c2aacd6dc49231c73bcb7d597308)
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
