Improve test

Author: vietj

vertx-core/src/test/java/io/vertx/tests/http/Http2MYRServerTest.java

@@ -166,7 +166,7 @@ public void onGoAwayRead(ChannelHandlerContext ctx, int lastStreamId, long error
             ch.pipeline().addLast(new ChannelDuplexHandler() {
               @Override
               public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
-                if (cause instanceof IOException && cause.getMessage().equals("Connection reset by peer")) {
+                if (cause instanceof IOException && cause.getMessage().startsWith("Connection reset")) {
                   goAway.complete(false);
                 } else {
                   goAway.completeExceptionally(cause);
@@ -205,6 +205,7 @@ public ChannelFuture connect(int port, String host, BiConsumer<ChannelHandlerCon
     if (goAway.get(20, TimeUnit.SECONDS)) {
       assertEquals(receivedRstFrames.get(), maxRstFramePerWindow + 1);
     } else {
+      // Mitigate CI behavior
       assertTrue(receivedRstFrames.get() < maxRstFramePerWindow + 1);
     }