Lockmode set on cluster object does not get passed to bucket object

When using the cluster object to get a bucket cluster.bucket , the lockmode does not get pass down to the bucket object.

So workaround is to the underlying cluster object in the cluster and calling the open_bucket method and passing in the bucket lockmode.

bucket = cluster._cluster.open_bucket(bucket_name, lockmode=2)

The bucket object will now have lockmode set.