[Backup Service] Failed location checks should should return a node id immediatly useful to the user (ideally an IP)

What's the issue?
When setting up a new repository, location checks will be run to assert all nodes have access to the global storage. When this check fails, the node uuid is returned, however, it would be nice if an identifier such as the node IP could be returned so users can quickly identify which node does not have access.

Example case
1) Create a 4 node cluster
2) Mount a samba share on all the nodes
3) Try to create a repository
4) Fails because one or more nodes can't access the global storage
5a) Need to check on all the nodes to find out which node can't access the storage
5b) Use the node uuid to find out which node can't access the storage (as a user, I chose 5a)
6) Realize that one node has the storage mounted in the wrong place