Connect to node.

def cmd_connect(node, cmd_name, node_info):
    """Connect to node."""
    # FUTURE: call function to check for custom connection-info
    conn_info = "Defaults"
    conf_mess = ("\r{0}{1} TO{2} {3} using {5}{4}{2} - Confirm [y/N]: ".
                 format(C_STAT[cmd_name.upper()], cmd_name.upper(), C_NORM,
                        node_info, conn_info, C_HEAD2))
    cmd_result = None
    if input_yn(conf_mess):
        exec_mess = ("\r{0}CONNECTING TO{1} {2} using {4}{3}{1}: ".
                     format(C_STAT[cmd_name.upper()], C_NORM, node_info,
                            conn_info, C_HEAD2))
        ui_erase_ln()
        ui_print(exec_mess)
        (ssh_user, ssh_key) = ssh_get_info(node)
        if ssh_user:
            ssh_cmd = "ssh {0}{1}@{2}".format(ssh_key, ssh_user,
                                              node.public_ips)
        else:
            ssh_cmd = "ssh {0}{1}".format(ssh_key, node.public_ips)
        print("\n")
        ui_print("\033[?25h")  # cursor on
        subprocess.call(ssh_cmd, shell=True)
        ui_print("\033[?25l")  # cursor off
        print()
        cmd_result = True
    else:
        ui_print_suffix("Command Aborted")
        sleep(0.75)
    return cmd_result