- then: the host has no user {username}
  function: host_does_not_have_user

- then: the host has user {username}
  function: host_has_user

- then: the user {username} on host has encrypted password {password}
  function: host_user_has_password

- then: the user {username} on host has shell {shell}
  function: host_user_has_shell