Recovery from local gateway should re-introduce new mappings
The delayed mapping intro tests exposed a bug where if a new mapping is introduced, yet not updated on the master, and a full restart occurs, reply of the transaction log will not cause the new mapping to be re-introduced.
closes #6659

add comment on the method
Add ability to restore partial snapshots

Closes #5742
Improve deletion of corrupted snapshots

Makes it possible to delete snapshots that are missing some of the metadata files. This can happen if snapshot creation failed because repository drive ran out of disk space.

Closes #6383
[TEST] Turn off double write check for restore