Support chart customization for ingress installation
### Problem to solve Former title: **Add SSL support for the AWS load balancer with ingress** We've integrated our gitlab projects to Kubernetes, running the kubernetes clusters in AWS EKS. We use helm, tiller and the auto-deploy-app chart to deploy to the cluster, also use ingress to allow external access to our apps. Ingress automatically creates the nginx config as well as a classic load balancer in AWS. However it appears that it doesn't create/install SSL certs for the load balancer ssl listeners in AWS. Can you please advise if there is a way to customize this configuration to add the certs or will it be possible to add the config to the existing installation? I've installed ingress from the project under Operations -> Kubernetes -> Applications -> Ingress ### Target audience Operators, developers ### Further details <!--- Include use cases, benefits, and/or goals (contributes to our vision?) --> ### Proposal Allow users to configure `controller` parameters when installing ingress via GitLab's k8s integration. ### What does success look like, and how can we measure that? <!--- If no way to measure success, link to an issue that will implement a way to measure this --> ### Links / references /label ~"feature proposal"
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