improvements from feedback

config/initializers/fog_google_https_private_urls.rb

+#
+# Monkey patching the https support for private urls
+# See https://gitlab.com/gitlab-org/gitlab-ee/issues/4879
+#
 module Fog
   module Storage
     class GoogleXML
       class File < Fog::Model
         module MonkeyPatch
-          # Monkey patch this to use `get_https_url`
           def url(expires)
             requires :key
             collection.get_https_url(key, expires)

spec/initializers/fog_google_https_private_urls_spec.rb

 require 'spec_helper'
 
-describe Fog::Storage::GoogleXML::File do
+describe 'Fog::Storage::GoogleXML::File' do
   let(:storage) do
     Fog.mock!
     Fog::Storage.new({