Tick runner queue after CI minutes is purchased

ee/changelogs/unreleased/addl-mins-refresh.yml

+---
+title: Tick instance runner after customer purchases additional CI minutes
+merge_request: 14494
+author:
+type: fixed

ee/lib/ee/api/namespaces.rb

@@ -26,6 +26,7 @@ module EE
             if params[:extra_shared_runners_minutes_limit].present?
               update_attrs[:last_ci_minutes_notification_at] = nil
               update_attrs[:last_ci_minutes_usage_notification_level] = nil
+              ::Ci::Runner.instance_type.each(&:tick_runner_queue)
             end
 
             namespace.update(update_attrs)

ee/spec/requests/api/namespaces_spec.rb

@@ -170,6 +170,16 @@ describe API::Namespaces do
         end
       end
     end
+
+    context "when customer purchases extra CI minutes" do
+      it "ticks instance runners" do
+        runners = Ci::Runner.instance_type
+
+        put api("/namespaces/#{group1.full_path}", admin), params: { plan: 'silver', extra_shared_runners_minutes_limit: 1000 }
+
+        expect(runners).to all(receive(:tick_runner_queue))
+      end
+    end
   end
 
   describe 'POST :id/gitlab_subscription' do