Expose more settings in values file for EKS ClusterTemplate

[wahabmk]

Description

Somebody from the community asked if there is an option in our EKS ClusterTemplate to configure the settings in ############## in the following:

apiVersion: controlplane.cluster.x-k8s.io/v1beta2
kind: AWSManagedControlPlane
metadata:
  name: capi-eks-cilium-control-plane
  namespace: default
spec:
  region: us-east-1
  sshKeyName: capi-eks-cilium
  version: v1.29.0
  associateOIDCProvider: true
#######THIS SECTION##########
  vpcCni:
    disable: true
  kubeProxy:
    disable: true
##############################
  roleAdditionalPolicies:
    - "arn:aws:iam::aws:policy/service-role/AmazonEBSCSIDriverPolicy"
  eksClusterName: default-capi-eks-cilium
#######THIS SECTION 2##########
  addons:
    - name: "aws-ebs-csi-driver"
      version: "v1.34.0-eksbuild.1"
      conflictResolution: "overwrite"
##############################

Acceptance Criteria

Our EKS ClusterTemplate should allow users to configure the mentioned settings by adding it to the template's helm chart

[dazmc]

just to add the reasoning - I don't tend to use AWS-CNI, i use cilium (byocni) which means when deploying from cluster api i disable the AWS_CNI/Kube-proxy addons. Then install cilium in kube-proxy replacement mode.