kubectl stops rendering List as suffix kind name for CRD resources

pkg/kubectl/cmd/util/openapi/validation/validation.go

@@ -18,7 +18,6 @@ package validation
 
 import (
 	"errors"
-	"strings"
 
 	"k8s.io/apimachinery/pkg/runtime/schema"
 	utilerrors "k8s.io/apimachinery/pkg/util/errors"
@@ -54,7 +53,7 @@ func (v *SchemaValidation) ValidateBytes(data []byte) error {
 		return utilerrors.NewAggregate(errs)
 	}
 
-	if strings.HasSuffix(gvk.Kind, "List") {
+	if (gvk == schema.GroupVersionKind{Version: "v1", Kind: "List"}) {
 		return utilerrors.NewAggregate(v.validateList(obj))
 	}
 

pkg/kubectl/cmd/util/openapi/validation/validation_test.go

@@ -394,4 +394,16 @@ items:
 `))
 		Expect(err.Error()).To(Equal("[kind not set, apiVersion not set]"))
 	})
+
+	It("is fine with crd resource with List as a suffix kind name, which may not be a list of resources", func() {
+		err := validator.ValidateBytes([]byte(`
+apiVersion: fake.com/v1
+kind: FakeList
+metadata:
+  name: fake
+spec:
+  foo: bar
+`))
+		Expect(err).To(BeNil())
+	})
 })