Specify SSH authentication methods

Solves upload to particularly configured SSH servers which wrongly chooses Kerberos auth method

Author: facchinm

arduino-core/src/cc/arduino/packages/uploaders/SSHUploader.java

@@ -110,6 +110,8 @@ public boolean uploadUsingPreferences(File sourcePath, String buildPath, String
       SSHClientSetupChainRing sshClientSetupChain = new SSHConfigFileSetup(new SSHPwdSetup());
       session = sshClientSetupChain.setup(port, jSch);
 
+      session.setConfig("PreferredAuthentications", "publickey,keyboard-interactive,password");
+
       session.setUserInfo(new NoInteractionUserInfo(PreferencesData.get("runtime.pwd." + port.getAddress())));
       session.connect(30000);