cros-disks: Add user and group fuse-zip

BUG=chromium:912236
TEST=Check for no collisions with ./display-accts.py --show-free

Change-Id: Ic5691c969bb393b2027904387f3c070f3476e612
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/eclass-overlay/+/2242875
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
Reviewed-by: François Degros <fdegros@chromium.org>
Tested-by: François Degros <fdegros@chromium.org>
Commit-Queue: François Degros <fdegros@chromium.org>