add auditing events search api

cmd/ks-apiserver/app/options/validation.go

@@ -17,6 +17,7 @@ func (s *ServerRunOptions) Validate() []error {
 	errors = append(errors, s.LoggingOptions.Validate()...)
 	errors = append(errors, s.AuthorizationOptions.Validate()...)
 	errors = append(errors, s.EventsOptions.Validate()...)
+	errors = append(errors, s.AuditingOptions.Validate()...)
 
 	return errors
 }