Fix deprecated RackAttack.throttled_response -> throttled_responder

Signed-off-by: Rémy Coutable <remy@rymai.me>

ee/spec/lib/gitlab/rack_attack_spec.rb

@@ -9,7 +9,7 @@
     let(:fake_cache) { instance_double("Rack::Attack::Cache") }
 
     before do
-      allow(fake_rack_attack).to receive(:throttled_response=)
+      allow(fake_rack_attack).to receive(:throttled_responder=)
       allow(fake_rack_attack).to receive(:throttle)
       allow(fake_rack_attack).to receive(:track)
       allow(fake_rack_attack).to receive(:safelist)

lib/gitlab/rack_attack.rb

@@ -12,9 +12,9 @@ def self.configure(rack_attack)
       rack_attack::Request.include(Gitlab::RackAttack::Request)
 
       # This is Rack::Attack::DEFAULT_THROTTLED_RESPONSE, modified to allow a custom response
-      rack_attack.throttled_response = lambda do |env|
+      rack_attack.throttled_responder = lambda do |request|
         throttled_headers = Gitlab::RackAttack.throttled_response_headers(
-          env['rack.attack.matched'], env['rack.attack.match_data']
+          request.env['rack.attack.matched'], request.env['rack.attack.match_data']
         )
         [429, { 'Content-Type' => 'text/plain' }.merge(throttled_headers), [Gitlab::Throttle.rate_limiting_response_text]]
       end

spec/lib/gitlab/rack_attack_spec.rb

@@ -27,7 +27,7 @@
     end
 
     before do
-      allow(fake_rack_attack).to receive(:throttled_response=)
+      allow(fake_rack_attack).to receive(:throttled_responder=)
       allow(fake_rack_attack).to receive(:throttle)
       allow(fake_rack_attack).to receive(:track)
       allow(fake_rack_attack).to receive(:safelist)
@@ -48,7 +48,7 @@
     it 'configures the throttle response' do
       described_class.configure(fake_rack_attack)
 
-      expect(fake_rack_attack).to have_received(:throttled_response=).with(an_instance_of(Proc))
+      expect(fake_rack_attack).to have_received(:throttled_responder=).with(an_instance_of(Proc))
     end
 
     it 'configures the safelist' do