Add spec for reverse_winhttps

Author: HD Moore

spec/modules/payloads_spec.rb

@@ -3696,4 +3696,15 @@
                           modules_pathname: modules_pathname,
                           reference_name: 'windows/meterpreter/reverse_winhttp'
   end
+
+  context 'windows/meterpreter/reverse_winhttps' do
+    it_should_behave_like 'payload cached size is consistent',
+                          ancestor_reference_names: [
+                            'stagers/windows/reverse_winhttps',
+                            'stages/windows/meterpreter'
+                          ],
+                          dynamic_size: false,
+                          modules_pathname: modules_pathname,
+                          reference_name: 'windows/meterpreter/reverse_winhttps'
+  end
 end