autotest: Add "power" user to "input" group.

This updates security_AccountsBaseline's group file
baseline.

BUG=chromium-os:36804
TEST=none

Change-Id: Id7c2f6e1cddf3c7977c5fd98f10db799febef756
Reviewed-on: https://gerrit.chromium.org/gerrit/40271
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
Commit-Queue: Daniel Erat <derat@chromium.org>
Tested-by: Daniel Erat <derat@chromium.org>
1 file changed