Fix. retry is incremented by twice

[charliechang]

There is a code defect in counting retry.

There are two places which can increment the counter.
NettyResponseFuture.java

    public boolean canRetry() {
        return maxRetry > 0 && CURRENT_RETRY_UPDATER.incrementAndGet(this) <= maxRetry;
    }
    public boolean canBeReplayed() {
        return !isDone() && canRetry() && !(Channels.isChannelValid(channel) && !getUri().getScheme().equalsIgnoreCase("https")) && !inAuth.get() && !inProxyAuth.get();
    }

NettyConnectListener.java

        boolean canRetry = future.canRetry(); //Add retry counter here
        LOGGER.debug("Trying to recover from failing to connect channel {} with a retry value of {} ", channel, canRetry);
        if (canRetry//
                && cause != null 
                && (future.getChannelState() != ChannelState.NEW || StackTraceInspector.recoverOnNettyDisconnectException(cause))) {

            if (requestSender.retry(future)) { //Add retry counter here either, since canBeReplayed will be called
                return;
            }
        }

The retry counter is added in future.canRetry() and requestSender.retry(future)
This PR fixed the problem and rename the method from canRetry to incRetryAndCheck for better naming convention

[slandelle]

Thanks!