Update default value for ingress tls

Issue: Helm: Set default value for ingress.tls as empt... (#15 - closed)

Update default value for ingress tls to an empty object with the expected values commented out under the block. I've often seen this pattern in Helm chart and it made sense to me since the existing default values of empty cert/key would result in an error. The helm chart should work out of the box on default values.