fix: minor cleanups to use OCI for hcp

Author: faiq

charts/cluster-api-runtime-extensions-nutanix/templates/helm-chart-svc.yaml

@@ -66,6 +66,6 @@ spec:
   selector:
     app: mindthegap
   ports:
-  - port: 80
+  - port: 443
     targetPort: 5000
-  type: NodePort
+  type: ClusterIP

pkg/handlers/generic/lifecycle/nfd/strategy_helmaddon.go

@@ -68,7 +68,7 @@ func (s helmAddonStrategy) apply(
 
 	values += fmt.Sprintf(`
 image:
-  tag: v%s-minimal
+  tag: %s-minimal
 `, s.helmChart.Version)
 
 	hcp := &caaphv1.HelmChartProxy{