metrics: Add metrics user and group

BUG=None
TEST=With chromium:1691167, perform emerge-${BOARD} metrics,
then check /build/<board>/etc/passwd, see user and group metrics

Change-Id: Ie27310f5fd82b588348318dadcbd4ba783e47608
Reviewed-on: https://chromium-review.googlesource.com/1691167
Tested-by: Hardik Goyal <hardikgoyal@google.com>
Commit-Ready: Hardik Goyal <hardikgoyal@google.com>
Legacy-Commit-Queue: Commit Bot <commit-bot@chromium.org>
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
2 files changed
tree: 73116679b37a40d3521a1aec011d9d56aabae707
  1. eclass/
  2. metadata/
  3. profiles/
  4. OWNERS
  5. PRESUBMIT.cfg