Set default value for corev1.Protocol type

Author: munnerz

pkg/crd/known_types.go

@@ -24,6 +24,14 @@ import (
 // KnownPackages overrides types in some comment packages that have custom validation
 // but don't have validation markers on them (since they're from core Kubernetes).
 var KnownPackages = map[string]PackageOverride{
+	"k8s.io/api/core/v1": func(p *Parser, pkg *loader.Package) {
+		// Explicit defaulting for the corev1.Protocol type in lieu of https://github.com/kubernetes/enhancements/pull/1928
+		p.Schemata[TypeIdent{Name: "Protocol", Package: pkg}] = apiext.JSONSchemaProps{
+			Type:    "string",
+			Default: &apiext.JSON{Raw: []byte(`"TCP"`)},
+		}
+		p.AddPackage(pkg)
+	},
 
 	"k8s.io/apimachinery/pkg/apis/meta/v1": func(p *Parser, pkg *loader.Package) {
 		// ObjectMeta is managed by the Kubernetes API server, so no need to