Geo: Fixes to Registry Replication feature

ee/lib/api/container_registry_event.rb

@@ -9,8 +9,7 @@ module API
     resource :container_registry_event do
       helpers do
         def authenticate_registry_notification!
-          endpoint = Gitlab.config.registry.notifications.find { |e| e['name'] == 'geo_event'}
-          secret_token = endpoint['headers']['Authorization']
+          secret_token = Gitlab.config.registry.notification_secret
 
           unauthorized! unless Devise.secure_compare(secret_token, headers['Authorization'])
         end

ee/spec/requests/api/container_registry_event_spec.rb

@@ -9,10 +9,7 @@ describe API::ContainerRegistryEvent do
 
   describe 'POST /container_registry_event/events' do
     before do
-      stub_registry_endpoints_configuration([{
-        name: 'geo_event',
-        headers: { 'Authorization' => secret_token }
-      }.with_indifferent_access])
+      allow(Gitlab.config.registry).to receive(:notification_secret) { secret_token }
     end
 
     it 'returns 200 status and events are passed to event handler' do
@@ -34,9 +31,5 @@ describe API::ContainerRegistryEvent do
 
       expect(response.status).to eq 401
     end
-
-    def stub_registry_endpoints_configuration(configuration)
-      allow(Gitlab.config.registry).to receive(:notifications) { configuration }
-    end
   end
 end