[cetic/nifi] Make functional on AWS EKS

[DavidHache]

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Is your feature request related to a problem? Please describe. Feature Request: I am trying to get this helm deployment working on EKS. I have AWS customers that would like to run a production ready Nifi but have minimal infra experience. EKSCLT + this helm chart seems to be a winning solution if it's production ready.

Describe the solution you'd like I would like to create an "AWS specific" config file and be able to deploy a robust solution out of the box on EKS.

Issues out of the box with current chart.

• Ingress configuration file uses old beta nomenclature. (I changed to apiVersion: networking.k8s.io/v1)
• Using load balancer type service doesn't work out of the box on AWS. Still troubleshooting it.
• https://github.com/cetic/helm-nifi/pull/227