fix(chartutil): Add the v1 apiextensions to the default scheme

Signed-off-by: Taylor Thomas <taylor.thomas@microsoft.com>

pkg/chartutil/capabilities.go

@@ -18,6 +18,7 @@ package chartutil
 import (
 	"k8s.io/client-go/kubernetes/scheme"
 
+	apiextensionsv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
 	apiextensionsv1beta1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1"
 )
 
@@ -75,9 +76,11 @@ func (v VersionSet) Has(apiVersion string) bool {
 }
 
 func allKnownVersions() VersionSet {
-	// Otherwise `helm template` fails validating due to an error like the below:
-	//   Error: apiVersion "apiextensions.k8s.io/v1beta1" in mychart/templates/crd.yaml is not available
+	// We should register the built in extension APIs as well so CRDs are
+	// supported in the default version set. This has caused problems with `helm
+	// template` in the past, so let's be safe
 	apiextensionsv1beta1.AddToScheme(scheme.Scheme)
+	apiextensionsv1.AddToScheme(scheme.Scheme)
 
 	groups := scheme.Scheme.PrioritizedVersionsAllGroups()
 	vs := make(VersionSet, 0, len(groups))