cros-disks: src_install the archivemount-seccomp.policy file

Also add a fuse-archivemount user and group, just like the existing
fuse-rar2fs and fuse-zip users and groups.

BUG=chromium:1216245
TEST=emerge-nami cros-disks && cros deploy dut cros-disks

Cq-Depend: chromium:2977280
Change-Id: I8ce9a3b345a6bf040186e750cd7b5b319fd997f5
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/2977252
Tested-by: Nigel Tao <nigeltao@chromium.org>
Reviewed-by: François Degros <fdegros@chromium.org>
Reviewed-by: David Munro <davidmunro@google.com>
Commit-Queue: Nigel Tao <nigeltao@chromium.org>
1 file changed