Update k8s dependency version to 1.21

Signed-off-by: xinyanwu409 <wxinyan@vmware>

vendor/k8s.io/client-go/informers/batch/v1/interface.go

@@ -24,6 +24,8 @@ import (
 
 // Interface provides access to all the informers in this group version.
 type Interface interface {
+	// CronJobs returns a CronJobInformer.
+	CronJobs() CronJobInformer
 	// Jobs returns a JobInformer.
 	Jobs() JobInformer
 }
@@ -39,6 +41,11 @@ func New(f internalinterfaces.SharedInformerFactory, namespace string, tweakList
 	return &version{factory: f, namespace: namespace, tweakListOptions: tweakListOptions}
 }
 
+// CronJobs returns a CronJobInformer.
+func (v *version) CronJobs() CronJobInformer {
+	return &cronJobInformer{factory: v.factory, namespace: v.namespace, tweakListOptions: v.tweakListOptions}
+}
+
 // Jobs returns a JobInformer.
 func (v *version) Jobs() JobInformer {
 	return &jobInformer{factory: v.factory, namespace: v.namespace, tweakListOptions: v.tweakListOptions}