Resend on getting JMSException from producer#send() call

[jiridanek]

AFAIK this is something that mtoth wanted for clustered brokers. Not sure if it is still needed. Will close eventually as not done.

                // SenderClient.java

                try {
                    msgProducer.send(message);
                } catch (JMSException jex) {
                    if (jex.getMessage().contains("[condition = amqp:connection:forced]")) {  // qpid-jms
                        LOG.warn("Resending message {} due to unblocking a blocking send.", msgCounter);
                        msgProducer.send(message);
                    } else {
                        throw jex;
                    }