def remote = [:]
remote.name = 'EU Server 1'
remote.host = 'server1@server.com'
remote.user = '$username'
remote.password = '$password'
remote.allowAnyHosts = true

stage('Copy dir to server'){
    sshPut remote: remote, from: '/data/workspace', into: '/home/server1/workspace1'
}

com.jcraft.jsch.JSchException: Auth fail
at com.jcraft.jsch.Session.connect(Session.java:519)
at com.jcraft.jsch.Session.connect(Session.java:183)
at com.jcraft.jsch.Session$connect$6.call(Unknown Source)