Toulouse JAM - Librairie partagée Jenkins Pipeline

@see https://github.com/jenkinsci/workflow-cps-global-lib-plugin/blob/master/README.md

Available methods :

copyFileTo(username, hostname, localpath, remotepath) : copie a file to a remote location using SCP

sshExec(username, hostname, command) : execute a command on a remote host via SSH

stopApplicationGracefully(username, hostname) : stop the remote java application (not very gracefully :-))