Notably, it seems to require more RAM than 6.0 so I've bumped it up to 512MB.
There also seems to be no good standard for ISO sources (or even whether they are downloaded automatically or not, which some people disable) so I've used one close to me even though it feels dirty. An ISO "fastestmirror" equivalent would be handy but should be the subject of later work.
Add template for CentOS 6.1 x86_64 minimal. Notably, it seems to requ…
…ire more RAM than 6.0.