fix(eks): incorrect enableDockerBridge value when enabled

[pahud]

When enableDockerBridge is enabled in BootstrapOptions, pass the value correctly to user-data.

Fixes: #5786

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[pahud]

Hi @RicoToothless

From the unit test output, I can confirm the --enable-docker-bridge true should be correctly set in the user-data.

And I can successfully kubectl get no to list the nodes with my CDK like this

    // create the cluster with a default nodegroup capacity
    const cluster = new eks.Cluster(this, 'Cluster', {
      vpc,
      mastersRole,
      defaultCapacity: 0,
      version: eks.KubernetesVersion.V1_16,
    });

    cluster.addCapacity('NG', {
      instanceType: new ec2.InstanceType('t3.large'),
      bootstrapOptions: {
        enableDockerBridge: true,
      }
    });

[aws-cdk-automation]

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[pahud]

Hi @eladb ,

PR is ready :-)

[mergify]

Thank you for contributing! Your pull request will be updated from master and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).