kubeadm: fix central api tests

pkg/api/testing/fuzzer.go

@@ -23,6 +23,7 @@ import (
 	"strconv"
 	"testing"
 
+	"k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm"
 	"k8s.io/kubernetes/pkg/api"
 	"k8s.io/kubernetes/pkg/api/resource"
 	"k8s.io/kubernetes/pkg/api/testapi"
@@ -538,6 +539,19 @@ func FuzzerFor(t *testing.T, version unversioned.GroupVersion, src rand.Source)
 			// Set the bytes field on the RawExtension
 			r.Raw = bytes
 		},
+		func(obj *kubeadm.MasterConfiguration, c fuzz.Continue) {
+			c.FuzzNoCustom(obj)
+			obj.KubernetesVersion = "v10"
+			obj.API.BindPort = 20
+			obj.Discovery.BindPort = 20
+			obj.Networking.ServiceSubnet = "foo"
+			obj.Networking.DNSDomain = "foo"
+		},
+		func(obj *kubeadm.NodeConfiguration, c fuzz.Continue) {
+			c.FuzzNoCustom(obj)
+			obj.APIPort = 20
+			obj.DiscoveryPort = 20
+		},
 	)
 	return f
 }