Log the last cluster UUID that wrote to a snapshot repository #94558
Description
Description
If multiple Elasticsearch clusters write to the same snapshot repository, the repository
will be corrupted.
As part of the solution to this problem, one has to identify the multiple clusters that write
to the repository, remove the repository from all clusters, and re-add it to only one (the one
that's meant to be written in this repository)
It's sometimes difficult to identify the clusters that are configured to use a repository.
Elasticsearch could log/save the last UUID that wrote to a repository to help debug this situation.