The Kubernetes CronJob for syncing CRLs syncs them to a temporary folder
and then copies them to the real location once the sync is complete. If
the temporary folder is empty, the `cp` command throws an error. This
updates the bash script that manages the sync so that it will skip the
copy command if the temporary location is empty.
- Fix some python formatting and import issues
- Fix dockerfile to include sync-crls script
- Adjust sync-crls script to use paths and CLI tools available in the
Docker container
This adds a previous version of the CRL sync functionality back to the
repo, with some small adjustments. We now grab the CRLs directly from
their DISA URLs.
The CRL sync is handled by a kubernetes cronjob that sync the files to a
persistent volume that is mounted into each Flask app container.
