Disable some tests that were;
* disabled in jenkins
* only executed under jruby

They rely on a locally configured jruby that is never going to be true on our CI infrastructure and is unlikely to be true when running through bundler etc


git-svn-id: https://svn.apache.org/repos/asf/buildr/trunk@1469192 13f79535-47bb-0310-9956-ffa450edef68