Increase memory allocation in minikube example

[janheindejong]

I noticed that deploying a simple playground ELK stack to minikube resulted in unexpected errors in Elasticsearch; see this discussion. Increasing the memory allocated to the Elasticsearch pods solved the issue.

[elasticmachine]

Since this is a community submitted pull request, a Jenkins build has not been kicked off automatically. Can an Elastic organization member please verify the contents of this patch and then kick off a build manually?

[cla-checker-service]

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