/**
  * Associates the ip address in to given instance
  * @param $instanceId
  * @param $ip
  */
 private function associateElasticIP($instanceId, $ip)
 {
     $this->ec2Client->associateAddress(['DryRun' => $this->dryRun, 'InstanceId' => $instanceId, 'PublicIp' => $ip, 'AllowReassociation' => true]);
 }