awsqs-kubernetes-get internal failure when running in parallel on first deployment

[mttwise]

On the first run of the awsqs-kubernetes-get custom resource after deploying a cluster, if more than one invocations to the custom resource are done concurrently, the CloudFormation deploys with an InternalFailure error. The cause is the function update code cannot be called concurrently.

Perhaps the function should be initialized during cluster deploy to prevent this?