Log Message:
Update ruby-net-ssh to 4.1.0.

=== 4.1.0
=== 4.1.0.rc1

 * ProxyJump support [Ryan McGeary, #500]
 * Fix agent detection on Windows [Christian Koehler, #495]

=== 4.1.0.beta1

 * Fix nil error when libsodium is not there [chapmajs ,#488]
 * SSH certificate support for client auth [David Bartley, #485]

=== 4.0.1
=== 4.0.1.rc2

 * ENV["HOME"] might be empty so filter non expandable paths [Matt \ 
Casper, #351]

=== 4.0.1.rc1

 * support of rbnacl 4.0 and better error message [#479]
 * support include in config files [Kimura Masayuki, #475]
 * fixed issue with ruby 2.2 or older on windows [#472]

=== 4.0.0
=== 4.0.0.rc3

 * parse `+` character in config files [Christoph Lupprich, #470, #314]

=== 4.0.0.rc2

 * Fixed OpenSSL 2.0/Ruby 2.4.0 warnings [Miklós Fazekas, #468]
 * Added ssh-ed25519 to KnownHosts:SUPPORTED_TYPE [detatka-kuzlatka-otevrete, \ 
Miklós Fazekas, #459]
 * Allow nil for :passhrase and passing in nil option is now a depreaction \ 
warning [Miklós Fazekas, #465]

=== 4.0.0.rc1

 * Allow :password to be nil for capistrano v2 compatibility [Will Bryant, #357]
 * In next_packet if prefer consuming buffer before filling it again if we have \ 
enough data [Miklós Fazekas, #454]

=== 4.0.0.beta4

 * Added exitstatus method to exec's return [Miklós Fazekas, #452]
 * Don't raise from exec if server closes transport just after channel close \ 
[Miklós Fazekas, #450]
 * Removed java_pageant, as jruby should be using regular pagent impl [Miklós \ 
Fazekas, ]
 * Use SSH_AUTH_SOCK if possible on windows (cygwin) [Miklós Fazekas, Martin \ 
Dürst, #365, #361]
 * HTTPS proxy support [Marcus Ilgner, #432]
 * Supports ruby 2.4.0.dev new exception type from OpenSSL::PKey.read

=== 4.0.0.beta3

 * Fix Net::SSH::Disconnect exceptions when channels are closed cleanly [Miklos \ 
Fazekas, #421, #422]

=== 4.0.0.beta2

 * Fix raiseUnlessLoaded undefined ERROR issue [Miklos Fazekas, #418]

=== 4.0.0.beta1

* Fix pageant [elconas, #235]
* Relaxed rbnacl,rbnacl-selenium contstraints ang give better errors about them \ 
[Miklos Fazekas, #398]
* Fix UTF-8 encoding issues [Ethan J. Brown, #407]

=== 4.0.0.alpha4

* Experimental event loop abstraction [Miklos Fazekas]
* RbNacl dependency is optional [Miklos Fazekas]
* agent_socket_factory option [Alon Goldboim]
* client sends KEXINIT, it doesn't have to wait for server [Miklos Fazekas]
* better error message when option is nil [Kane Morgan]
* prompting can be customized [Miklos Fazekas]

=== 4.0.0.alpha3

* added max_select_wait_time [Eugene Kenny]

=== 4.0.0.alpha2

* when transport closes we're cleaning up channels [Miklos Fazekas]

=== 4.0.0.alpha1

* ed25519 key support [Miklos Fazekas]
* removed camellia [Miklos Fazekas]

=== 3.1.0
=== 3.1.0.rc1

* fix Secure#verify [Jean Boussier]
* use the smallest of don't spend longer time than keepalive if it's configured \ 
[Eugene Kenny]

=== 3.1.0.beta3

* forward/on_open_failed should stop listning closed socket otherwise it locks \ 
#269 [Miklos Fazekas,Scott McGillivray]
* fix incorrect pattern handling in config files #310 [Miklos Fazekas]

=== 3.1.0.beta2

* trying to execute something on a not yet opend channel throws nicer messag \ 
[Miklos Fazekas]
* calling close on a not opened channel marks the channel for close [Miklos Fazekas]
* read keepalive configuration from ssh config files [Miklos Fazekas]
* send client version on hadshake before waiting for server to reduce handshake \ 
time [Miklos Fazekas]
* allow custom Net::SSH::KnownHosts implementations [Jean Boussier]
* memoize known host so we only search it once per session [Jean Boussier, \ 
Miklos Fazekas]

=== 3.0.2
=== 3.0.2.rc1

* fixed rare WaitWritable error with proxy commands [Miklos Fazkas, Andre Meij]]
* if Net::SSH.start user is nil and config has no entry we default to Etc.getlogin
* Bugfix: CHANNEL_CLOSE was sent before draining ouput buffer #280 [Christopher \ 
F. Auston]

=== 3.0.1
=== 3.0.1.rc1

* Breaking change from 2.* series: exec! without block now returns empty string \ 
instread of nil if command has no output \ 
[https://github.com/net-ssh/net-ssh/pull/273]
* Support remote_user as %r in proxy commands [Dominic Scheirlinck]
* Raise Net::SSH::ConnectionTimeout from connection timeout [Carl Hoerberg]

=== 3.0.0.rc1

* SemVer: Major version change because of dropping of ruby 1.9