[WIP] Improve configurability of ingress config #4188
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Fixes #4187
This pull request improves the configurability of the ingress config for environments like ours where we run nginx ingress, cert-manager, and external DNS. This change allows ingress classes to be configured and also gives the user more control over TLS hosts so that TLS hosts can be matched up with a DNS entry configured via the annotations. This allows for TLS termination of domain name targeted traffic.