Ping the device on the other end of the connection

    .. code-block: bash

        salt '*' onyx.cmd ping

def ping():
    '''
    Ping the device on the other end of the connection

    .. code-block: bash

        salt '*' onyx.cmd ping
    '''
    if _worker_name() not in DETAILS:
        init()
    try:
        return DETAILS[_worker_name()].conn.isalive()
    except TerminalException as e:
        log.error(e)
        return False