systemd-systemctl: Fix handling of aliased targets
The script scans for services, parses them and makes sure those targets are still
there. The exists file check fails if the target is an alias, such as default.target
so add an additional test.
[YOCTO #13685]
Signed-off-by: Werner Grift <sky.captin@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>