hooks: inject request.user for proper url generation in async methods.

- this is just a temporary injection as it's later properly bootstrapped in the async celery process.

rhodecode/lib/hooks_daemon.py

@@ -212,7 +212,14 b' class Hooks(object):'
         extras = AttributeDict(extras)
         server_url = extras['server_url']
         request = bootstrap_request(application_url=server_url)
+
         bootstrap_config(request)  # inject routes and other interfaces
+
+        # inject the user for usage in hooks
+        request.user = AttributeDict({'username': extras.username,
+                                      'ip_addr': extras.ip,
+                                      'user_id': extras.user_id})
+
         extras.request = request
 
         try: