[chef] Specifying templates with non-OS criteria

[Guy Matz < >]

The docs regarding template specificity indicate the OS is the only criteria that can be used for dynamically choosing a template:

The pattern for file specificity is as follows:

1. host-node[:fqdn]
2. node[:platform]-node[:platform_version]
3. node[:platform]-version_components: The version string is split on decimals and searched from greatest specificity to least; for example, if the location from the last rule was centos-5.7.1, then centos-5.7 and centos-5 would also be searched.
4. node[:platform]
5. default

Can I use other criteria?  I would like to choose a template based on metal vs VM.

Thanks a lot,

Guy