This PS adds the rabbitmq secret volume + mount for the audit
usage cronjob, as it was previously missing and the job's command(s)
were failing when run.
In addition, add labels to the CronJob's metadata, so that it can
be picked up for pre-delete hooks.
Change-Id: I0a2ed0655702b4e41cc12d3908b9aed141e6f0d2