Balance request sizes in NettyHttpRequestSizeLimitIT

This test should demonstrate that a single (larger)
request is processed but on of multiple large concurrent requests
is rejected. This test broke too early under some circumstances in
network mode as the limit is quite low.

With this commit we reduce the size of the individual large
requests but issue more concurrent ones thus increasing stability
of this test.

core/src/test/java/org/elasticsearch/http/netty/NettyHttpRequestSizeLimitIT.java

@@ -57,7 +57,7 @@ public class NettyHttpRequestSizeLimitIT extends ESIntegTestCase {
         ensureGreen();
 
         // we use the limit size as a (very) rough indication on how many requests we should sent to hit the limit
-        int numRequests = LIMIT.bytesAsInt() / 50;
+        int numRequests = LIMIT.bytesAsInt() / 100;
 
         StringBuilder bulkRequest = new StringBuilder();
         for (int i = 0; i < numRequests; i++) {
@@ -69,6 +69,11 @@ public class NettyHttpRequestSizeLimitIT extends ESIntegTestCase {
 
         @SuppressWarnings("unchecked")
         Tuple<String, CharSequence>[] requests = new Tuple[] {
+            Tuple.tuple("/index/type/_bulk", bulkRequest),
+            Tuple.tuple("/index/type/_bulk", bulkRequest),
+            Tuple.tuple("/index/type/_bulk", bulkRequest),
+            Tuple.tuple("/index/type/_bulk", bulkRequest),
+            Tuple.tuple("/index/type/_bulk", bulkRequest),
             Tuple.tuple("/index/type/_bulk", bulkRequest),
             Tuple.tuple("/index/type/_bulk", bulkRequest),
             Tuple.tuple("/index/type/_bulk", bulkRequest),