ff733b0975
This was missed in the original Ansibling because unlike all the other settings it does not use an env var to set it. Instead we have to write a file that the container startup scripts will append to the actual config. The comment for this value says it should be a human so we set it to the root address of the running host which should end up in infra rooter inboxes. Change-Id: I235dfcba53c029136c141382920279ab593d1f82