Support default options for external modules

lib/msf/core/modules/external/shim.rb

@@ -50,6 +50,14 @@ class Msf::Modules::External::Shim
     meta[:advanced_options] = mod_meta_common_options(mod, 'advanced_options', ignore_options: ignore_options)
     meta[:capabilities]     = mod.meta['capabilities']
     meta[:notes]            = transform_notes(mod.meta['notes'])
+
+    if mod.meta['default_options'].nil?
+      mod.meta['default_options'] = {}
+    end
+    meta[:default_options]  = mod.meta['default_options'].map do |name, value|
+      "#{name.dump} => #{value.inspect}"
+    end.join(",\n          ")
+
     meta
   end
 

lib/msf/core/modules/external/templates/evasion.erb

@@ -7,16 +7,20 @@ class MetasploitModule < Msf::Evasion
   def initialize
     super({
     <%= common_metadata meta %>
-      'References'  =>
+      'References'      =>
         [
           <%= meta[:references] %>
         ],
-      'Platform'       => [<%= meta[:platform] %>],
-      'Arch'           => [<%= meta[:arch] %>],
-      'Targets'        =>
+      'Platform'        => [<%= meta[:platform] %>],
+      'Arch'            => [<%= meta[:arch] %>],
+      'Targets'         =>
         [
           <%= meta[:targets] %>
         ],
+      'DefaultOptions' =>
+        {
+          <%= meta[:default_options] %>
+        }
       })
 
       register_options([