Merge pull request #5234 from blackjid/bug_fix_set_image_digest_and_tag

fix edit set image to parse both tag and digest

api/pkg/util/image.go

@@ -0,0 +1,10 @@
+package util
+
+import (
+	"sigs.k8s.io/kustomize/api/internal/image"
+)
+
+// Splits image string name into name, tag and digest
+func SplitImageName(imageName string) (name string, tag string, digest string) {
+	return image.Split(imageName)
+}