refs #37792 - :template_name in correct scope

The template_name method must be under the Bootdisk
scope, otherwise it overrides the method from Foreman
and all templates (like Grub2 or Kickstart PXE)
have name ForemanBootdisk.

app/lib/foreman_bootdisk/scope/bootdisk.rb

@@ -3,6 +3,9 @@
 module ForemanBootdisk
   module Scope
     class Bootdisk < ::Foreman::Renderer::Scope::Provisioning
+      def template_name
+        "Foreman Bootdisk"
+      end
     end
   end
 end

app/lib/foreman_bootdisk/template_helpers.rb

@@ -40,9 +40,5 @@ def bootdisk_chain_url(mac = host.try(:mac), action = 'iPXE')
     def bootdisk_raise(*args)
       raise ::Foreman::Exception.new(*args)
     end
-
-    def template_name
-      "Foreman Bootdisk"
-    end
   end
 end