Ability to specify enabled puppet classes through :classes config

Provide the ability to specify if a class is enabled or disabled through
the classes configuration option rather than through the answer file.
This is a progressive option, as it takes precedence over values in the
answer file but continues to respect answer file if no data is found
in the classes option.

lib/kafo/configuration.rb

@@ -134,15 +134,15 @@ def modules
 
         @data.map do |name, values|
           if (class_config = app[:classes][name.to_sym])
-            can_disable = class_config[:can_disable] || false
+            can_disable = class_config[:can_disable] || true
             excluded_params = class_config[:exclude] || []
+            enabled = class_config[:enabled]
           else
             can_disable = true
             excluded_params = []
+            enabled = !!values || values.is_a?(Hash)
           end
 
-          enabled = !!values || values.is_a?(Hash)
-
           puppet_mod = PuppetModule.new(
             name,
             configuration: self,

lib/kafo/kafo_configure.rb

@@ -446,7 +446,13 @@ def parse_app_arguments
 
     def parse_cli_arguments
       # enable/disable modules according to CLI
-      config.modules.each { |mod| send("enable_#{mod.name}?") ? mod.enable : mod.disable }
+      config.modules.each do |mod|
+        send("enable_#{mod.name}?") ? mod.enable : mod.disable
+
+        if config.app.dig(:classes, mod.identifier.to_sym)
+          config.app[:classes][mod.identifier.to_sym][:enabled] = true
+        end
+      end
 
       # set and reset values coming from CLI arguments
       params.each do |param|