Merge pull request #1529 from fl4via/UNDERTOW-2331

[UNDERTOW-2331] At RapidResetDDoSUnitTestCase, accept  a smaller numb…

Author: fl4via

core/src/test/java/io/undertow/protocols/http2/RapidResetDDoSUnitTestCase.java

@@ -243,7 +243,7 @@ public void assertDoSRstFramesHandled(int totalNumberOfRequests, int rstStreamLi
 
             // server sent go away before processing and responding client frames, sometimes this happens, depends on the order of threads
             // being executed
-            if (responses.isEmpty()) {
+            if (responses.size() < totalNumberOfRequests) {
                 Assert.assertTrue(errorExpected);
                 Assert.assertNotNull(exception);
                 Assert.assertTrue(exception instanceof ClosedChannelException);