Added homename fact

custom/lib/facter/homename.rb

@@ -0,0 +1,8 @@
+require 'puppet'
+
+Facter.add('homename') do
+    setcode do
+        Puppet.parse_config
+        Puppet.settings.value('certname')
+    end
+end

puppet/templates/puppet.conf.erb

@@ -28,6 +28,10 @@
     # re-installs on remote networks.
     server = <%= puppet_server %>
 
+    # The name to use when handling certificates. Set during
+    # bootstrap based on the fully qualified domain name.
+    certname = <%= homename %>
+
     # Enable sending reports to puppet server.
     report = true