Updated user group baseline test for privetd user group

Since webservd user has been removed from privetd user group,
update the baseline test.

BUG=brillo:171
TEST=test_that -b link 100.96.48.244 security_AccountsBaseline
CQ-DEPEND=CL:247270,CL:247302

Change-Id: Ie432453eb3ace5fdb0ce81811966227d65590ddc
Reviewed-on: https://chromium-review.googlesource.com/247303
Tested-by: Alex Vakulenko <avakulenko@chromium.org>
Reviewed-by: Christopher Wiley <wiley@chromium.org>
Commit-Queue: Alex Vakulenko <avakulenko@chromium.org>
1 file changed