Bug 1107546 - Add apache2 alias from /ui/perf.html to /perf.html

puppet/files/apache/treeherder-service.conf

@@ -25,6 +25,9 @@
   Alias /logviewer.html /home/<%= @APP_USER %>/treeherder-ui/<%= @APP_UI %>/logviewer.html
   ProxyPass        /logviewer.html !
 
+  Alias /perf.html /home/<%= @APP_USER %>/treeherder-ui/<%= @APP_UI %>/perf.html
+  ProxyPass        /perf.html !
+
   Alias /js /home/<%= @APP_USER %>/treeherder-ui/<%= @APP_UI %>/js
   ProxyPass        /js !