We have two options here:
a) Add a BackupWorker.cassandra_cli_path, in addition to BackupWorker.nodetool_path. The problem with this approach is that if we add BackupWorker.cqlsh_path in the future, we would have 3 variables basically pointing to the same dir.
b) Replace BackupWorker.nodetool_path with BackupWorker.cassandra_bin_dir, so we could easily use all binaries from there. However this would break backward compatibility.
Which one do you think would be best?