Initializes the connection to the server via SSH.

def _setup_ssh(self):
        """Initializes the connection to the server via SSH."""
        global paramiko
        if paramiko is none:
            import paramiko

        self.ssh = paramiko.SSHClient()
        self.ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
        self.ssh.connect(self.server, username=self.user, pkey=self.pkey)