Make the whitehall assets cronjob lock
Make the whitehall assets cronjob lock

This job was running on top of itself repeatedly. The correct solution would
be to not run rsync on an NFS-mounted volume. For the time being, to prevent
the machine from melting, simply lock the job.

alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet