SYNOPSIS
use MYDan::Util::ExpSSH;
my $ssh = MYDan::Util::ExpSSH->new( );
$ssh->conn( host => 'foo', user => 'joe', 
            pass => '/conf/file', 
            sudo => 'user1',
            rsync => '-aP /tmp/foo user@host:/tmp/bar', #if rsync
          );