manifests: Add a manifest for deploying the Cockpit Demo
manifests: Add a manifest for deploying the Cockpit Demo

The cockpit demo is hosted outisde of the core repository, but for
demonstration purpose it is still valuable to deploy it.

See also https://github.com/kubevirt/cockpit-demo

kubevirt/kubevirt,mpolednik/kubevirt,rmohr/kubevirt,stu-gott/kubevirt,davidvossel/kubevirt,rmohr/kubevirt,fabiand/kubevirt,admiyo/kubevirt,davidvossel/kubevirt,stu-gott/kubevirt,fabiand/kubevirt,stu-gott/kubevirt,kubevirt/kubevirt,kubevirt/kubevirt,mpolednik/kubevirt,sungwonh/kubevirt,davidvossel/kubevirt,admiyo/kubevirt,stu-gott/kubevirt,kubevirt/kubevirt,davidvossel/kubevirt,sungwonh/kubevirt