Create a cron job to verify replicas are in sync

[Bento007]

User story

• As a system administrator
• I want to know when my replicas are out of sync either by missing files or by incorrect file sizes
• so that I can fix the inconsistencies

Definition of done

a script that can be run on a regular basis that will check the following

• [ ] All replicas have the same list of bundles and files
• [ ] All replicas have the same sizes for the files
• [ ] All replicas have matching file checksums

Design thoughts: A script that validates each file in the Data Store will take a long time, and will take longer and longer as the system grows. A nice optimization would be to somehow track which files have been verified and only rarely (if ever) re-verify them.