Validating the scheduling gate naming format

pkg/apis/core/validation/validation.go

@@ -3365,9 +3365,7 @@ func validateSchedulingGates(schedulingGates []core.PodSchedulingGate, fldPath *
 	// There should be no duplicates in the list of scheduling gates.
 	seen := sets.String{}
 	for i, schedulingGate := range schedulingGates {
-		if schedulingGate.Name == "" {
+		allErrs = append(allErrs, ValidateQualifiedName(schedulingGate.Name, fldPath.Index(i))...)
-			allErrs = append(allErrs, field.Required(fldPath.Index(i), "must not be empty"))
-		}
 		if seen.Has(schedulingGate.Name) {
 			allErrs = append(allErrs, field.Duplicate(fldPath.Index(i), schedulingGate.Name))
 		}

pkg/apis/core/validation/validation_test.go

@@ -18696,7 +18696,10 @@ func TestValidateSchedulingGates(t *testing.T) {
 				{Name: "foo"},
 				{Name: ""},
 			},
-			wantFieldErrors: []*field.Error{field.Required(fieldPath.Index(1), "must not be empty")},
+			wantFieldErrors: field.ErrorList{
+				field.Invalid(fieldPath.Index(1), "", "name part must be non-empty"),
+				field.Invalid(fieldPath.Index(1), "", "name part must consist of alphanumeric characters, '-', '_' or '.', and must start and end with an alphanumeric character (e.g. 'MyName',  or 'my.name',  or '123-abc', regex used for validation is '([A-Za-z0-9][-A-Za-z0-9_.]*)?[A-Za-z0-9]')"),
+			},
 		},
 		{
 			name: "legal gates",
@@ -18706,6 +18709,14 @@ func TestValidateSchedulingGates(t *testing.T) {
 			},
 			wantFieldErrors: field.ErrorList{},
 		},
+		{
+			name: "illegal gates",
+			schedulingGates: []core.PodSchedulingGate{
+				{Name: "foo"},
+				{Name: "\nbar"},
+			},
+			wantFieldErrors: []*field.Error{field.Invalid(fieldPath.Index(1), "\nbar", "name part must consist of alphanumeric characters, '-', '_' or '.', and must start and end with an alphanumeric character (e.g. 'MyName',  or 'my.name',  or '123-abc', regex used for validation is '([A-Za-z0-9][-A-Za-z0-9_.]*)?[A-Za-z0-9]')")},
+		},
 		{
 			name: "duplicated gates (single duplication)",
 			schedulingGates: []core.PodSchedulingGate{