sys-apps/systemd: fix authenication error when using go-dbus

The CL cherry-picks https://github.com/systemd/systemd/pull/9625/commits/987c138c19a45e9afe400d50ea797e64264f5fab
to fix the authenication error when using go-dbus to connect to systemd.

BUG=b/171809082
TEST=tryjob;Manually verify the fix by running `echo -ne '\0AUTH\r\n' | sudo nc -U /run/systemd/private`
RELEASE_NOTE=Fix an authenication error when using go-dbus to connect
systemd.

Change-Id: I22f4175a9f9b8cd7ae6916acefc23095e97491f2
Reviewed-on: https://cos-review.googlesource.com/c/cos/overlays/board-overlays/+/8344
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Vaibhav Rustagi <vaibhavrustagi@google.com>
3 files changed