Document bootstrapping a new infrastructure.

Change-Id: Ic3345ecfe1c093ef68844430ed1c77cadbcf8b94
Port across params and puppet_cron.

The bottom of the dependency stack.

Change-Id: I48bdcb02a833a866f414c0bdc0e4eaef7fcd55a8
Initial bootstrap configuration.

Just enough to get a puppetmaster up, I hope.

Change-Id: Ibcc3b6863057eb526fd2c65db30df21c832f7674