Add feature flag for rebrand

Author: chao-xian

config/settings.yml

@@ -1,4 +1,5 @@
 features:
+  rebrand: false
   ses_submissions: false
 
 forms_admin:

config/settings/development.yml

@@ -7,6 +7,9 @@ aws:
   file_upload_s3_bucket_name: govuk-forms-dev-file-upload
   ses_submission_email_configuration_set_name: bounces_and_complaints_handling_rule
 
+features:
+  rebrand: true
+
 ses_submission_email:
   from_email_address: "local-test@dev.forms.service.gov.uk"
   reply_to_email_address: "local-test@dev.forms.service.gov.uk"

spec/config/settings_spec.rb

@@ -22,7 +22,7 @@
     it "has a default value" do
       features = settings[:features]
 
-      expect(features).to eq({ "ses_submissions" => false })
+      expect(features).to eq({ "ses_submissions" => false, "rebrand" => false })
     end
   end