We currently have a <media> element for identifying ISO install media. Many distros also provide online install trees, or sysadmin have locally hosted install trees (often from the mounted ISO media). We want to be able to handle install trees, and optionally detect their distro This series adds support for install trees via a new <tree> element. From experiance with virt-install auto-detecting the OS from an install tree is rather hard. The only distros we can reliably do it for are Fedora/RHEL derivatives which publish a '.treeinfo' file with metadata about the OS. virt-install has a bunch of evil hacks for trying to detect other distros based on existance of certain filenames. This series only supports auto-detection for distros which can do a .treeinfo file. I'm not intending to support the other virt-install hacks.
