Due to newuidmap and newgidmap utils are needed for unprivileged
LXC containers creation. We should should install uidmap package
together with LXC in Apertis images.

Apertis: https://phabricator.apertis.org/T4599



Signed-off-by: Andrew Lee (李健秋) <andrew.lee@collabora.co.uk>
Reviewed-by: Denis Pynkin <denis.pynkin@collabora.com>
Differential Revision: https://phabricator.apertis.org/D7621