#### CustomResourceDefinition Defaulting

CustomResourceDefinitions also have new support for defaulting, with defaults specified using the `default` keyword in the OpenAPI validation schema. Defaults are set for unspecified fields in an object sent to the API, and when reading from etcd.

Defaulting will be available as alpha in Kubernetes 1.15 and requires structural schemas.

				invalid("spec", "validation", "openAPIV3Schema", "x-kubernetes-validations[4]", "fieldPath"),
			},
		},
	}

	for _, tc := range tests {
		t.Run(tc.name, func(t *testing.T) {

			// duplicate defaulting behaviour
			if tc.resource.Spec.Conversion != nil && tc.resource.Spec.Conversion.Strategy == apiextensions.WebhookConverter && len(tc.resource.Spec.Conversion.ConversionReviewVersions) == 0 {

							Format: "",
						},
					},
					"default": {
						SchemaProps: spec.SchemaProps{
							Description: "default is a default value for undefined object fields. Defaulting is a beta feature under the CustomResourceDefaulting feature gate. Defaulting requires spec.preserveUnknownFields to be false.",
							Ref:         ref("k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1.JSON"),
						},
					},
					"maximum": {

been used in the time specified by `--legacy-service-account-token-clean-up-period` (defaulting to one year), **and** are referenced from the `.secrets` list of a ServiceAccount object, **and**  are not referenced from pods. This label causes the authentication layer to reject use of the credentials. After being labeled as invalid, if the time specified by `--legacy-service-account-token-clean-up-period` (defaulting to one year) passes without the credential being used, the secret is automatically...

* Resolves spurious rollouts of workload controllers when upgrading the API server, due to incorrect defaulting of an alpha procMount field in pods ([#78883](https://github.com/kubernetes/kubernetes/pull/78883), [@liggitt](https://github.com/liggitt))

- Removed tracking annotation from validation and defaulting. ([#117633](https://github.com/kubernetes/kubernetes/pull/117633), [@kannon92](https://github.com/kannon92))

## Changelog since v1.10.5

### Action Required

* Resolves spurious rollouts of workload controllers when upgrading the API server due to incorrect defaulting of an alpha procMount field in pods ([#78882](https://github.com/kubernetes/kubernetes/pull/78882), [@liggitt](https://github.com/liggitt))

  fields: ipFamilyPolicy (SingleStack, PreferDualStack, RequireDualStack),
  ipFamilies (a list of families assigned), and clusterIPs (inclusive of
  clusterIP).  Most users do not need to set anything at all, defaulting will
  handle it for them.  Services are single-stack unless the user asks for

                            resource types)"
                          items:
                            description: "SecretObjectReference identifies an API
                              object including its namespace, defaulting to Secret.
                              \n The API object must be valid in the cluster; the
                              Group and Kind must be registered in the cluster for