Add request route tags to response event (#516)

* Add request route tags to response event

API.md

@@ -191,6 +191,7 @@ Event object associated with the `responseEvent` event option into Good. `reques
     - `referer` - the referer headed of the incoming request.
 - `route` - route path used by request. Maps to `request.route.path`.
 - `log` - maps to `request.getLog()` of the hapi request object.
+- `tags` - array of strings representing any tags from route config. Maps to `request.route.settings.tags`.
 - `config` - plugin-specific config object combining `request.route.settings.plugins.good` and `request.plugins.good`. Request-level overrides route-level. Reporters could use `config` for additional filtering logic.
 
 ### `Ops`

lib/utils.js

@@ -83,6 +83,8 @@ class RequestSent {
         this.log = (request.route.settings.log === false ? [] : request.getLog());          // Explicitly compare to false for hapi < v15
         /* $lab:coverage:on$ */
 
+        this.tags = request.route.settings.tags;
+
         if (reqOptions.headers) {
             this.headers = req.headers;
         }