update testing to use NLB for controlPlaneLoadBalancer

Author: damdo

test/e2e/data/infrastructure-aws/withoutclusterclass/kustomize_sources/base/cluster-template.yaml

@@ -21,6 +21,9 @@ kind: AWSCluster
 metadata:
   name: "${CLUSTER_NAME}"
 spec:
+  controlPlaneLoadBalancer:
+    loadBalancerType: nlb
+    healthCheckProtocol: HTTPS
   region: "${AWS_REGION}"
   sshKeyName: "${AWS_SSH_KEY_NAME}"
 ---