fixing vertx client test

Author: thugrock7

instrumentation/vertx/vertx-web-3.0/src/test/java/io/opentelemetry/javaagent/instrumentation/hypertrace/vertx/VertxClientInstrumentationPostTests.java

@@ -109,7 +109,15 @@ public void postJson_write_end_string() throws TimeoutException, InterruptedExce
 
     TEST_WRITER.waitForTraces(1);
     List<List<Span>> traces =
-        TEST_WRITER.waitForSpans(1, span -> span.getKind().equals(Span.SpanKind.SPAN_KIND_SERVER));
+        TEST_WRITER.waitForSpans(
+            1,
+            span ->
+                !span.getKind().equals(Span.SpanKind.SPAN_KIND_CLIENT)
+                    || span.getAttributesList().stream()
+                        .noneMatch(
+                            keyValue ->
+                                keyValue.getKey().equals("http.url")
+                                    && keyValue.getValue().getStringValue().contains("/echo")));
     Assertions.assertEquals(1, traces.size(), String.format("was: %d", traces.size()));
     Span clientSpan = traces.get(0).get(0);
     Assertions.assertEquals(