WAL archive backups: Replace per-repository archives with per-partition archives
In Proof of concept replace backup bundles with sn... (#6081 - closed) backups were archived using the GetSnapshot RPC, the problem is that this is a per-repository RPC and for WAL backups we need to backup the entire partition. This issue is to replace the GetSnapshot implementation with a partition specific implementation.
WAL prerequisites:
Edited by James Fargher