set route on exceptions

Author: vandonr

dd-java-agent/instrumentation/vertx/vertx-web/vertx-web-3.4/src/main/java/datadog/trace/instrumentation/vertx_3_4/server/RouteHandlerWrapper.java

@@ -54,6 +54,9 @@ public void handle(final RoutingContext routingContext) {
       try {
         actual.handle(routingContext);
       } catch (final Throwable t) {
+        if (spanStarter) {
+          setRoute(routingContext);
+        }
         DECORATE.onError(span, t);
         throw t;
       }

dd-java-agent/instrumentation/vertx/vertx-web/vertx-web-4.0/src/main/java/datadog/trace/instrumentation/vertx_4_0/server/RouteHandlerWrapper.java

@@ -51,6 +51,9 @@ public void handle(final RoutingContext routingContext) {
       try {
         actual.handle(routingContext);
       } catch (final Throwable t) {
+        if (spanStarter) {
+          setRoute(routingContext);
+        }
         DECORATE.onError(span, t);
         throw t;
       }