We want to move the KV tenant connector out of kvtenantccl to kvtenant to enable wider test coverage of multi-tenant features. There should be two ways to instantiate the connector. A connector that connects to any supplied addresses and a connector that only connects to a loopback address.

Existing multi-tenant capable tests that reference the ccl package should be updated to use the appropriate connector, whether it be a connector that can connect only via loopback or one that can connect to remote nodes.

Epic: CRDB-16091

Jira issue: CRDB-25139