Use learn gitlab utlimate template for experiment

In the learn gitlab experiment we want to link to issues that are only
available in the learn-gitlab-ultimate project template, since the
actions require a trial.
With this MR, we use the ultimate template when the experiment is active
and also update the issue IDs to link to the right issue to get more
information.

app/helpers/learn_gitlab_helper.rb

@@ -24,13 +24,13 @@ module LearnGitlabHelper
   private
 
   ACTION_ISSUE_IDS = {
-    git_write: 2,
-    pipeline_created: 4,
-    merge_request_created: 5,
-    user_added: 7,
-    trial_started: 13,
-    required_mr_approvals_enabled: 15,
-    code_owners_enabled: 16
+    git_write: 6,
+    pipeline_created: 7,
+    merge_request_created: 9,
+    user_added: 8,
+    trial_started: 2,
+    required_mr_approvals_enabled: 11,
+    code_owners_enabled: 10
   }.freeze
 
   ACTION_DOC_URLS = {

ee/app/controllers/registrations/projects_controller.rb

@@ -4,6 +4,9 @@ module Registrations
   class ProjectsController < ApplicationController
     layout 'checkout'
 
+    LEARN_GITLAB_TEMPLATE = 'learn_gitlab.tar.gz'
+    LEARN_GITLAB_ULTIMATE_TEMPLATE = 'learn_gitlab_ultimate_trial.tar.gz'
+
     before_action :check_signup_onboarding_enabled
     before_action only: [:new] do
       set_namespace
@@ -48,20 +51,12 @@ module Registrations
     end
 
     def create_learn_gitlab_project
-      title, filename = if helpers.in_trial_onboarding_flow?
-                          [s_('Learn GitLab - Ultimate trial'), 'learn_gitlab_ultimate_trial.tar.gz']
-                        else
-                          [s_('Learn GitLab'), 'learn_gitlab.tar.gz']
-                        end
-
-      learn_gitlab_template_path = Rails.root.join('vendor', 'project_templates', filename)
-
       learn_gitlab_project = File.open(learn_gitlab_template_path) do |archive|
         ::Projects::GitlabProjectsImportService.new(
           current_user,
           namespace_id: @project.namespace_id,
           file: archive,
-          name: title
+          name: learn_gitlab_project_name
         ).execute
       end
 
@@ -88,5 +83,24 @@ module Registrations
         :visibility_level
       ]
     end
+
+    def learn_gitlab_project_name
+      helpers.in_trial_onboarding_flow? ? s_('Learn GitLab - Ultimate trial') : s_('Learn GitLab')
+    end
+
+    def learn_gitlab_template_path
+      file = if helpers.in_trial_onboarding_flow? || learn_gitlab_experiment_enabled?
+               LEARN_GITLAB_ULTIMATE_TEMPLATE
+             else
+               LEARN_GITLAB_TEMPLATE
+             end
+
+      Rails.root.join('vendor', 'project_templates', file)
+    end
+
+    def learn_gitlab_experiment_enabled?
+      Gitlab::Experimentation.in_experiment_group?(:learn_gitlab_a, subject: current_user) ||
+        Gitlab::Experimentation.in_experiment_group?(:learn_gitlab_b, subject: current_user)
+    end
   end
 end

ee/spec/controllers/registrations/projects_controller_spec.rb

@@ -3,8 +3,11 @@
 require 'spec_helper'
 
 RSpec.describe Registrations::ProjectsController do
+  include AfterNextHelpers
+
   let_it_be(:user) { create(:user) }
   let_it_be(:namespace) { create(:group) }
+  let_it_be(:project) { create(:project) }
 
   describe 'GET #new' do
     subject { get :new }
@@ -76,10 +79,40 @@ RSpec.describe Registrations::ProjectsController do
         expect(namespace.projects.find_by_name(s_('Learn GitLab'))).to be_import_finished
       end
 
+      context 'learn gitlab project' do
+        using RSpec::Parameterized::TableSyntax
+
+        where(:trial, :experiment_enabled, :project_name, :template) do
+          false | false | 'Learn GitLab' | described_class::LEARN_GITLAB_TEMPLATE
+          false | true  | 'Learn GitLab' | described_class::LEARN_GITLAB_ULTIMATE_TEMPLATE
+          true  | false | 'Learn GitLab - Ultimate trial' | described_class::LEARN_GITLAB_ULTIMATE_TEMPLATE
+          true  | true | 'Learn GitLab - Ultimate trial' | described_class::LEARN_GITLAB_ULTIMATE_TEMPLATE
+        end
+
+        with_them do
+          let(:path) { Rails.root.join('vendor', 'project_templates', template) }
+          let(:expected_arguments) { { namespace_id: namespace.id, file: handle, name: project_name } }
+          let(:handle) { double }
+          let(:trial_onboarding_flow_params) { { trial_onboarding_flow: trial } }
+
+          before do
+            stub_experiment_for_subject(learn_gitlab_a: experiment_enabled)
+            allow(File).to receive(:open).and_call_original
+            expect(File).to receive(:open).with(path).and_yield(handle)
+          end
+
+          specify do
+            expect_next(::Projects::GitlabProjectsImportService, user, expected_arguments)
+              .to receive(:execute).and_return(project)
+
+            subject
+          end
+        end
+      end
+
       context 'when the trial onboarding is active' do
         let_it_be(:trial_onboarding_flow_params) { { trial_onboarding_flow: true } }
         let_it_be(:trial_onboarding_issues_enabled) { true }
-        let_it_be(:project) { create(:project) }
         let_it_be(:first_project) { create(:project) }
         let_it_be(:trial_onboarding_context) do
           { learn_gitlab_project_id: project.id, namespace_id: project.namespace_id, project_id: first_project.id }