Set a memory store for rack attack spec

spec/requests/rack_attack_global_spec.rb

@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe 'Rack Attack global throttles' do
+RSpec.describe 'Rack Attack global throttles', :use_clean_rails_memory_store_caching do
   include RackAttackSpecHelpers
 
   let(:settings) { Gitlab::CurrentSettings.current_application_settings }

spec/support/shared_examples/requests/rack_attack_shared_examples.rb

@@ -112,7 +112,7 @@ RSpec.shared_examples 'rate-limited token-authenticated requests' do
         expect(response).not_to have_gitlab_http_status(:too_many_requests)
       end
 
-      arguments = {
+      arguments = a_hash_including({
         message: 'Rack_Attack',
         env: :throttle,
         remote_ip: '127.0.0.1',
@@ -121,7 +121,7 @@ RSpec.shared_examples 'rate-limited token-authenticated requests' do
         user_id: user.id,
         'meta.user' => user.username,
         matched: throttle_types[throttle_setting_prefix]
-      }
+      })
 
       expect(Gitlab::AuthLogger).to receive(:error).with(arguments).once