I'm working on my deployment automation for RKE2 clusters from Rancher. I deployed currently from a Helm Chart, but I need to customize Calico slightly more than simply saying CNI: Calico. Is there a way to, for example, change the BGP and EthernetAutoDetection of IPPools? Or is the Helm chart deployment method not looking to be the way forward, as I see the latest documentation seems to only mention Terraform.