[faiproject/fai] a3e09f: add ECDSA-key to known_hosts

[chbmeyer]

  Branch: refs/heads/master
  Home:   https://github.com/faiproject/fai
  Commit: a3e09fb11a1508f4d210c05c7d1511997317ec55
      https://github.com/faiproject/fai/commit/a3e09fb11a1508f4d210c05c7d1511997317ec55
  Author: Christian Meyer <c2h5oh at web.de>
  Date:   2021-12-22 (Wed, 22 Dec 2021)

  Changed paths:
    M bin/fai-setup

  Log Message:
  -----------
  add ECDSA-key to known_hosts