Merge branch 'vs/fix-summary-addon-purchase' into 'master'

.../javascripts/subscriptions/buy_minutes/components/app.vue

...scripts/subscriptions/buy_minutes/components/checkout.vue

...ts/subscriptions/buy_minutes/components/order_summary.vue

.../buy_minutes/components/order_summary/summary_details.vue

ee/app/assets/javascripts/subscriptions/buy_minutes/utils.js

.../javascripts/vue_shared/purchase_flow/components/step.vue

ee/app/controllers/subscriptions_controller.rb

ee/app/helpers/subscriptions_helper.rb

ee/app/views/subscriptions/buy_minutes.html.haml

ee/spec/controllers/subscriptions_controller_spec.rb

...inutes/components/checkout/addon_purchase_details_spec.js

...ons/buy_minutes/components/checkout/order_summary_spec.js

..._minutes/components/order_summary/summary_details_spec.js

...ubscriptions/buy_minutes/components/order_summary_spec.js

ee/spec/frontend/subscriptions/buy_minutes/mock_data.js

ee/spec/frontend/subscriptions/buy_minutes/utils_spec.js

ee/spec/helpers/subscriptions_helper_spec.rb

...ort/shared_examples/views/subscription_shared_examples.rb

ee/spec/views/subscriptions/buy_minutes.html.haml_spec.rb

locale/gitlab.pot