Investigate passing CR values into helm values

Once we have switched to using helm for the operator, we will want to revisit the current CR values to allow control of the helm settings.

As a first step it might make sense to have a separate section in the CR for helm values, that aren't validated. Allowing configuration of most of the helm values.

Or perhaps we instead need to introduce some sort of transformation on the CR values to get them into helm values format.

(Or even perhaps we can have a job that converts helm values to our CR, once we have added the helm 3 value scheme objects to the charts)