Consider redact password included in jump-connect exception

[buenoguilherme]

If an error occurs during connection, the exception thrown includes the entire hosts list, which in turn may have passwords and those passwords will be present in the stacktrace.

(fn [e s]
  (throw
   (ex-info
    (str "Failed to connect "
         (.getUserName s) "@"
         (.getHost s) ":"
         (.getPort s)
         " " (pr-str (into [] (.getIdentityNames agent)))
         " " (pr-str hosts))
    {:hosts hosts}
    e)))

The password could be removed from the exception message and data.

[tiagomlalves]

@buenoguilherme Did you consider just sanitizing the password instead of removing it? Or in other words, isn't it important to distinguish cases where a password is set from when a password is not set at all?