Fixed kitchensink-rf functional test

In [commit for WFK2-391](https://github.com/jboss-developer/jboss-wfk-quickstarts/commit/e3c26a571ca1dfd4cc0fe8124a2000235aa2512f), KitchensinkRichFacesTest.java was replaced by an older version from richfaces/jdf-quickstarts. This commit fixes that.