cros-disks: Set up group for FUSE daemons

Set up a group for uniting all FUSE-based helpers so they can access
temporary directories created for them by cros-disks. Remove unnecessary
access to chronos files from those users.

BUG=chromium:841119
TEST=Check display-accts.py output, build image and try to mount exfat
and ntfs usb drive and rar archive.
CQ-DEPEND=CL:1080350

Change-Id: Id937ceabb3f2b019ea88d37d121b1126fa1b0e36
Reviewed-on: https://chromium-review.googlesource.com/1060953
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Sergei Datsenko <dats@chromium.org>
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
2 files changed
tree: 25fb538bc03da664fae52af64d0f64f0412a10c5
  1. eclass/
  2. metadata/
  3. profiles/
  4. PRESUBMIT.cfg