[AsseticBundle] fixed visibility of YUI filters

Author: kriswallsmith

src/Symfony/Bundle/AsseticBundle/Resources/config/yui_compressor.xml

@@ -10,12 +10,12 @@
  </parameters>
 
  <services>
- <service id="assetic.filter.yui_css" class="%assetic.filter.yui_css.class%" public="false">
+ <service id="assetic.filter.yui_css" class="%assetic.filter.yui_css.class%">
  <tag name="assetic.filter" alias="yui_css" />
  <argument>%assetic.yui_jar%</argument>
  <argument>%assetic.java_bin%</argument>
  </service>
- <service id="assetic.filter.yui_js" class="%assetic.filter.yui_js.class%" public="false">
+ <service id="assetic.filter.yui_js" class="%assetic.filter.yui_js.class%">
  <tag name="assetic.filter" alias="yui_js" />
  <argument>%assetic.yui_jar%</argument>
  <argument>%assetic.java_bin%</argument>