Add feature flag to extend credit card requirement

Extend CC requirement to old users by enabling a FF
which is disabled by default.

ee/app/models/ee/user.rb

@@ -412,8 +412,9 @@ module EE
 
     private
 
-    def created_after_credit_card_release_day?
-      created_at >= ::Users::CreditCardValidation::RELEASE_DAY
+    def created_after_credit_card_release_day?(project)
+      created_at >= ::Users::CreditCardValidation::RELEASE_DAY ||
+        ::Feature.enabled?(:ci_require_credit_card_for_old_users, project, default_enabled: :yaml)
     end
 
     def has_valid_credit_card?
@@ -422,7 +423,7 @@ module EE
 
     def requires_credit_card_to_run_pipelines?(project)
       return false unless ::Gitlab.com?
-      return false unless created_after_credit_card_release_day?
+      return false unless created_after_credit_card_release_day?(project)
 
       root_namespace = project.root_namespace
       if root_namespace.free_plan?

ee/config/feature_flags/development/ci_require_credit_card_for_old_users.yml

+---
+name: ci_require_credit_card_for_old_users
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/61565 
+rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/330706
+milestone: '13.12'
+type: development
+group: group::continuous integration
+default_enabled: false

ee/spec/models/ee/user_spec.rb

@@ -1683,21 +1683,23 @@ RSpec.describe User do
 
     using RSpec::Parameterized::TableSyntax
 
-    where(:is_saas, :cc_present, :is_free, :is_trial, :free_ff_enabled, :trial_ff_enabled, :days_from_release, :result) do
+    where(:is_saas, :cc_present, :is_free, :is_trial, :free_ff_enabled, :trial_ff_enabled, :old_users_ff_enabled, :days_from_release, :result, :description) do
       # self-hosted
-      false | false | false | false | true  | true  | 0 | true  # paid plan
-      false | false | false | true  | true  | true  | 0 | true  # missing CC on trial plan
+      false | false | false | false | true  | true  | false | 0 | true | 'self-hosted paid plan'
+      false | false | false | true  | true  | true  | false | 0 | true | 'self-hosted missing CC on trial plan'
 
       # saas
-      true  | false | false | false | true  | true  | 0  | true  # missing CC on paid plan
-      true  | false | true  | false | true  | true  | 0  | false # missing CC on free plan
-      true  | false | true  | false | true  | true  | -1 | true  # missing CC on free plan but old user
-      true  | false | true  | false | false | true  | 0  | true  # missing CC on free plan - FF off
-      true  | false | false | true  | true  | true  | 0  | false # missing CC on trial plan
-      true  | false | false | true  | true  | true  | -1 | true  # missing CC on trial plan but old user
-      true  | false | false | true  | true  | false | 0  | true  # missing CC on trial plan - FF off
-      true  | true  | true  | false | true  | true  | 0  | true  # present CC on free plan
-      true  | true  | false | true  | true  | true  | 0  | true  # present CC on trial plan
+      true  | false | false | false | true  | true  | false | 0  | true  | 'missing CC on paid plan'
+      true  | false | true  | false | true  | true  | false | 0  | false | 'missing CC on free plan'
+      true  | false | true  | false | true  | true  | false | -1 | true  | 'missing CC on free plan but old user'
+      true  | false | true  | false | true  | true  | true  | -1 | false | 'missing CC on free plan but old user and FF enabled'
+      true  | false | true  | false | false | true  | false | 0  | true  | 'missing CC on free plan - FF off'
+      true  | false | false | true  | true  | true  | false | 0  | false | 'missing CC on trial plan'
+      true  | false | false | true  | true  | true  | false | -1 | true  | 'missing CC on trial plan but old user'
+      true  | false | false | true  | true  | true  | true  | -1 | false | 'missing CC on trial plan but old user and FF enabled'
+      true  | false | false | true  | true  | false | false | 0  | true  | 'missing CC on trial plan - FF off'
+      true  | true  | true  | false | true  | true  | false | 0  | true  | 'present CC on free plan'
+      true  | true  | false | true  | true  | true  | false | 0  | true  | 'present CC on trial plan'
     end
 
     with_them do
@@ -1709,10 +1711,13 @@ RSpec.describe User do
         allow(project.namespace).to receive(:trial?).and_return(is_trial)
         stub_feature_flags(
           ci_require_credit_card_on_free_plan: free_ff_enabled,
-          ci_require_credit_card_on_trial_plan: trial_ff_enabled)
+          ci_require_credit_card_on_trial_plan: trial_ff_enabled,
+          ci_require_credit_card_for_old_users: old_users_ff_enabled)
       end
 
-      it { is_expected.to eq(result) }
+      it description do
+        expect(subject).to eq(result)
+      end
     end
   end