Introduced FF to rollout new CDot url

config/feature_flags/development/new_customersdot_staging_url.yml

+---
+name: new_customersdot_staging_url
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/71827
+rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/342513
+milestone: '14.4'
+type: development
+group: group::fulfillment
+default_enabled: false

ee/spec/features/billings/billing_plans_spec.rb

@@ -19,6 +19,7 @@ RSpec.describe 'Billing plan pages', :feature, :js do
 
     stub_feature_flags(show_billing_eoa_banner: true)
     stub_feature_flags(hide_deprecated_billing_plans: false)
+    stub_feature_flags(new_customersdot_staging_url: false)
 
     stub_billing_plans(nil)
     stub_billing_plans(namespace.id, plan.name, plans_data.to_json)

ee/spec/features/groups/billing_spec.rb

@@ -71,6 +71,10 @@ RSpec.describe 'Groups > Billing', :js do
         create(:gitlab_subscription, end_date: Date.today + 14.days, namespace: group, hosted_plan: bronze_plan, seats: 15)
       end
 
+      before do
+        stub_feature_flags(new_customersdot_staging_url: false)
+      end
+
       it_behaves_like 'hides search settings'
 
       it 'shows the proper title and subscription data' do

ee/spec/helpers/billing_plans_helper_spec.rb

@@ -5,6 +5,10 @@ require 'spec_helper'
 RSpec.describe BillingPlansHelper do
   include Devise::Test::ControllerHelpers
 
+  before do
+    stub_feature_flags(new_customersdot_staging_url: false)
+  end
+
   describe '#subscription_plan_data_attributes' do
     let(:group) { build(:group) }
     let(:customer_portal_url) { EE::SUBSCRIPTIONS_MANAGE_URL }

lib/gitlab/subscription_portal.rb

@@ -3,7 +3,15 @@
 module Gitlab
   module SubscriptionPortal
     def self.default_subscriptions_url
-      ::Gitlab.dev_or_test_env? ? 'https://customers.stg.gitlab.com' : 'https://customers.gitlab.com'
+      if ::Gitlab.dev_or_test_env?
+        if Feature.enabled?(:new_customersdot_staging_url, default_enabled: :yaml)
+          'https://customers.staging.gitlab.com'
+        else
+          'https://customers.stg.gitlab.com'
+        end
+      else
+        'https://customers.gitlab.com'
+      end
     end
 
     def self.subscriptions_url

spec/lib/gitlab/subscription_portal_spec.rb

@@ -9,6 +9,7 @@ RSpec.describe ::Gitlab::SubscriptionPortal do
 
   before do
     stub_env('CUSTOMER_PORTAL_URL', env_value)
+    stub_feature_flags(new_customersdot_staging_url: false)
   end
 
   describe '.default_subscriptions_url' do