Updates the number of broker nodes in the cluster.
See https://www.paws-r-sdk.com/docs/kafka_update_broker_count/ for full documentation.
kafka_update_broker_count(
ClusterArn,
CurrentVersion,
TargetNumberOfBrokerNodes
)
[required] The Amazon Resource Name (ARN) that uniquely identifies the cluster.
[required] The version of cluster to update from. A successful operation will then generate a new version.
[required] The number of broker nodes that you want the cluster to have after this operation completes successfully.