fix selectattr on dict
diff --git a/apache/meta/heka.yml b/apache/meta/heka.yml
index 2004b0e..d30d9e3 100644
--- a/apache/meta/heka.yml
+++ b/apache/meta/heka.yml
@@ -1,5 +1,5 @@
 {%- from "apache/map.jinja" import server with context %}
-{%- if server.get('enabled', False) and server.get('site', {}).selectattr("type", "keystone")|length > 0 %}
+{%- if server.get('enabled', False) and server.get('site', {})|selectattr("type", "keystone")|length > 0 %}
 
 log_collector:
   decoder: