title: Add e-mail to CSR generated with keytool
body: <p>As per this : <a href="http://en.wikipedia.org/wiki/Certificate_signing_request" rel="noreferrer">http://en.wikipedia.org/wiki/Certificate_signing_request</a> the CSR can contain an email address. </p>
  
  <p>My question is how can I add such e-mail address field considering I`m generating the CSR with keytool ?</p>
  
  <p>Thank you.</p>