Increase number of messages sent in testFairness() by a factor of ten.

The fairness property is implemented in terms of randomness (see comment
towards end of rabbit_limiter) so we can never be 100% this will pass
but that ought to make it exponentially less likely to fail.

It would probably be a bad idea to try to implement fairness in a non-random
way; there'd always be an edge case somewhere that would end up being unfair.

Author: Simon MacMullen

test/src/com/rabbitmq/client/test/functional/QosTests.java

@@ -185,7 +185,7 @@ public void testFairness()
     {
         QueueingConsumer c = new QueueingConsumer(channel);
         final int queueCount = 3;
-        final int messageCount = 10;
+        final int messageCount = 100;
         List<String> queues = configure(c, 1, queueCount, messageCount);
 
         for (int i = 0; i < messageCount - 1; i++) {