Incorporate required API changes

* Use `LocalObjectReference` and `NamespacedObjectKindReference`
  from `meta` package, as required by controller API changes.
* Remove `Update` field from created `ImageUpdateAutomation`,
  as the API changed and the default is now defined in the Custom
  Resource Definition.

Signed-off-by: Hidde Beydals <hello@hidde.co>

pkg/manifestgen/sync/sync.go

@@ -23,11 +23,11 @@ import (
 	"strings"
 	"time"
 
-	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"sigs.k8s.io/yaml"
 
 	kustomizev1 "github.com/fluxcd/kustomize-controller/api/v1beta1"
+	"github.com/fluxcd/pkg/apis/meta"
 	sourcev1 "github.com/fluxcd/source-controller/api/v1beta1"
 
 	"github.com/fluxcd/flux2/pkg/manifestgen"
@@ -52,7 +52,7 @@ func Generate(options Options) (*manifestgen.Manifest, error) {
 			Reference: &sourcev1.GitRepositoryRef{
 				Branch: options.Branch,
 			},
-			SecretRef: &corev1.LocalObjectReference{
+			SecretRef: &meta.LocalObjectReference{
 				Name: options.Name,
 			},
 			GitImplementation: options.GitImplementation,