title: create an ec2 instance with multiple key pairs
body: <p>While creating an ec2 instance, we provide a key pair name. </p>
  
  <p>But generally, I associate multiple ssh public/private keys with any remote server. I know that it's not possible to attach a key pair once the ec2 server has been created. So I would like to know whether it's possible or not to use multiple key pairs while creating an instance.</p>