cros-disks: Add mkfs user

Relevant discussion on the security of using the
"disk" group for formatting:
https://buganizer.corp.google.com/issues/205506505

BUG=chromium:967569
TEST=Check for no collisions with ./display-accts.py --show-free

Cq-Depend: chromium:3294782
Change-Id: I348b727b288f755e3d453ab6ef4fe1b4f8123330
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/eclass-overlay/+/3283384
Tested-by: Marcello Salomao <msalomao@google.com>
Reviewed-by: Fran├žois Degros <fdegros@chromium.org>
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
3 files changed
tree: f2447c3c6fe0bb19475b310ac35c954e7d02a3cd
  1. acct-group/
  2. acct-user/
  3. eclass/
  4. metadata/
  5. profiles/
  6. OWNERS
  7. PRESUBMIT.cfg