dnsmasq: add dnsmasq group and user

These are required to upgrade dnsmasq to 2.72 for the latest security
fixes.

BUG=chrome-os-partner:38062
TEST=precq bots
CQ-DEPEND=CL:269206,CL:269996

Change-Id: I4538365aad287655fa8b4300cae778d90a4828b4
Reviewed-on: https://chromium-review.googlesource.com/269400
Reviewed-by: Chris Masone <cmasone@chromium.org>
Tested-by: Timothy Jennison <tjennison@chromium.org>
Commit-Queue: Timothy Jennison <tjennison@chromium.org>
2 files changed
tree: 9a7eb3a29e6a4503ca62d0ae4938c939aa1048fa
  1. PRESUBMIT.cfg
  2. eclass/
  3. metadata/
  4. profiles/