The repair/rebuild task first introduced in NEXUS-11213 has the potential to make quite a few changes to data and/or blobs, especially in a post-restore situation.
- Add a mode to the rebuild/repair task that causes it to log the changes it would make, but not actually make any changes to blobs and/or metadata.
- Line items should still be made in a long-running task log for the run.
- Each task log entry should clearly indicate it was possible but not actually performed. (Some clear prefix?)