Use UUID's for puppet certnames¶

Users who wish to deploy their hosts using a random unique id, should enable that setting, and use the certname directive in their puppet.conf template, e.g.:

certname = <%25= @host.certname %25>

when the certname was not generated (e.g. for hosts created before this patch) @host.certname would return the host name instead.

for provisioning where DNS is not reliable, it is highly recommended to use certnames.