Seeds for customer oauth application and billing

db/fixtures/development/28_integrations.rb

+# frozen_string_literal: true
+
+Gitlab::Seeder.quiet do
+  # This is only enabled if you're going to be using the customer portal in
+  # development.
+  # CUSTOMER_PORTAL_URL=https://your.ngrok.io FILTER=integrations rake db:seed_fu
+  flag = 'CUSTOMER_PORTAL_URL'
+
+  if ENV[flag]
+    ApplicationSetting.current_without_cache.update!(check_namespace_plan: true)
+
+    print '.'
+
+    Doorkeeper::Application.create!(
+      name: 'Customer Portal Development',
+      uid: '28cc28f03b415fbc737a7364dc06af0adf12688e1b0c6669baf6850a6855132b',
+      secret: '74c96596ec3f82dd137dd5775f31eba919f77b0a3114611f0411d148d727c64c',
+      redirect_uri: "#{ENV['CUSTOMER_PORTAL_URL']}/auth/gitlab/callback",
+      scopes: 'api read_user openid',
+      trusted: true,
+      confidential: true
+    )
+
+    print '.'
+  else
+    puts "Skipped. To enable, set the `#{flag}` environment variable to your development customer's portal url."
+  end
+end