[redshift] Single node cluster creation fails with cloudformation error

[dirkgomez]

When trying to create a single-node cluster in our acceptance environment, creation fails at the cloudformation level:

Number of nodes must be not be supplied for cluster type single-node

Reproduction Steps

Here's the relevant code snippet that creates the erroneous cloudformation:

    new redshift.Cluster(this, 
      `Cluster${this.stackName}`,
      {
        ...
        clusterType: environment == 'prd' ? redshift.ClusterType.MULTI_NODE : redshift.ClusterType.SINGLE_NODE,
       ...

### Error Log

Number of nodes must be not be supplied for cluster type single-node

The created cloudformation templated indeed has a:      NumberOfNodes: 1

### Environment

  - **CLI Version      : ** 1.49.1
  - **Framework Version: ** 1.49.1
  - **Node.js Version:** 14.4.0
  - **OS               :** Mac OS
  - **Language (Version):** TypeScript

### Other

<!-- e.g. detailed explanation, stacktraces, related issues, suggestions on how to fix, links for us to have context, eg. associated pull-request, stackoverflow, gitter, etc -->




--- 

This is :bug: Bug Report

[nija-at]

Looks like a bug coming from

aws-cdk/packages/@aws-cdk/aws-redshift/lib/cluster.ts

Line 428 in 8d4c635

const nodeCount = props.numberOfNodes !== undefined ? props.numberOfNodes : (clusterType === ClusterType.MULTI_NODE ? 2 : 1);

.

This can be worked around by using property overrides and explicitly unsetting the NumberOfNodes property.

[njlynch]

Dupe of #9961, which was merged two weeks ago and released in 1.62.0.