increase delay

Author: laurit

instrumentation/java-http-client/testing/src/main/java/io/opentelemetry/instrumentation/javahttpclient/AbstractJavaHttpClientTest.java

@@ -31,6 +31,7 @@
 import java.util.Set;
 import java.util.concurrent.CancellationException;
 import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.TimeUnit;
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Test;
 
@@ -134,6 +135,7 @@ void cancelRequest() throws InterruptedException {
                   HttpRequest.newBuilder()
                       .uri(uri)
                       .method(method, HttpRequest.BodyPublishers.noBody())
+                      .header("delay", String.valueOf(TimeUnit.SECONDS.toMillis(10)))
                       .build();
               return client
                   .sendAsync(request, HttpResponse.BodyHandlers.ofString())