Replace `helmv2.KubeConfig` with `meta.KubeConfig`

This is a backwards compatible change in terms of "YAML API", as they
spec still equals the previous one. Object type has just changed.

Signed-off-by: Hidde Beydals <hidde@hhh.computer>

cmd/flux/create_helmrelease.go

@@ -200,7 +200,7 @@ func createHelmReleaseCmdRun(cmd *cobra.Command, args []string) error {
 	}
 
 	if helmReleaseArgs.kubeConfigSecretRef != "" {
-		helmRelease.Spec.KubeConfig = &helmv2.KubeConfig{
+		helmRelease.Spec.KubeConfig = &meta.KubeConfigReference{
 			SecretRef: meta.SecretKeyReference{
 				Name: helmReleaseArgs.kubeConfigSecretRef,
 			},