Add timeout to apache http client 5 async test (#12336)

Author: laurit

instrumentation/apache-httpclient/apache-httpclient-5.0/javaagent/src/test/java/io/opentelemetry/javaagent/instrumentation/apachehttpclient/v5_0/ApacheHttpAsyncClientTest.java

@@ -12,6 +12,7 @@
 import java.net.URI;
 import java.util.Map;
 import java.util.concurrent.CancellationException;
+import java.util.concurrent.TimeUnit;
 import org.apache.hc.client5.http.async.methods.SimpleHttpRequest;
 import org.apache.hc.client5.http.async.methods.SimpleHttpResponse;
 import org.apache.hc.client5.http.config.RequestConfig;
@@ -114,7 +115,7 @@ public SimpleHttpRequest buildRequest(String method, URI uri, Map<String, String
 
     @Override
     HttpResponse executeRequest(SimpleHttpRequest request, URI uri) throws Exception {
-      return client.execute(request, getContext(), null).get();
+      return client.execute(request, getContext(), null).get(30, TimeUnit.SECONDS);
     }
 
     @Override