Basebox and java updates

* Update the CentOS basebox to CentOS 6.5
* Change the Ubuntu basebox to use the latest bento box, switch to 64-bit for consistency
* Update `.kitchen.local.yml` example to reflect changes to the `java` cookbook, which no longer needs a URL but does need you to accept a license
  * Also update the WLP download URL
Recently we removed base_url. We didn't want to be updating the cookbook every time a Liberty Profile fix pack was released, so we fixed issue #19 and now by default we download the index.yml file which tells us the URL to the latest download. Users can still override this by setting default[:wlp][:archive][:runtime][:url] (and the :extended and :extras).