BENTO-13 DNS Breaks When Using CentOS 5 Boxes and Hostonly Networking

Proposed workaround for [BENTO-13](http://tickets.opscode.com/browse/BENTO-13). The kudzu autoconfig service doesn't play well with VirtualBox/Vagrant when they try to do hostonly networking and the general response to people having trouble with kudzu seems to be "disable it".