Configuring TCP ports in Helm values file

Help!
1

I need to pass TCP connections to a ClusterIP Service, configured using a Helm values file.

Adding this in the values.yaml file

controller
  service:
    tcpPorts:
      - name: coturn
        port: 5349
        targetPort: 5349 
        protocol: TCP

appears to direct connections on that port to the controller; running helm get manifest outputs a file containing

apiVersion: v1
kind: Service
metadata:
spec:
  type: LoadBalancer
  ports:
    - name: coturn
      port: 5349
      protocol: TCP
      targetPort: 5349
...
kind: Deployment
spec:
  template:
    spec:
      containers:
        - ports
            - name: coturn
              containerPort: 5349
              protocol: TCP

However, it’s not clear how to pass the connections on to the ClusterIP service. helm show values indicates there’s a field

controller:
  service:
    ## Additional tcp ports to expose
    ## This is especially useful for TCP services:
    ## https://github.com/haproxytech/kubernetes-ingress/blob/master/documentation/controller.md
    # tcpPorts: []
    #  - name: http-alt
    #    port: 8080
    #    targetPort: http-alt
    #    nodePort: 32080

However, including tcpPorts with even an empty array causes helm to throw the error:

Error: UPGRADE FAILED: cannot patch “haproxy-controller-kubernetes-ingress” with kind ConfigMap: “” is invalid

Even if this was acceptable, there doesn’t appear to be a field to identify the internal service to pass the connections to.

There is documentation on adding a ConfigMap or TCP resource after HAProxy is installed, but isn’t there a way to do that with the helm values file?