Fixes issue with rails reserved keyword type exporting/importing services....

Fixes issue with rails reserved keyword type exporting/importing services. Also fixed CustomIssueTrackerService title setter and added relevant specs.

CHANGELOG

@@ -8,6 +8,7 @@ v 8.12.2 (unreleased)
 v 8.12.1
   - Fix a memory leak in HTML::Pipeline::SanitizationFilter::WHITELIST
   - Fix issue with search filter labels not displaying
+  - Fix Import/Export not recognising correctly the imported services.
 
 v 8.12.0
   - Update the rouge gem to 2.0.6, which adds highlighting support for JSX, Prometheus, and others. !6251

app/models/project_services/custom_issue_tracker_service.rb

@@ -9,6 +9,10 @@ class CustomIssueTrackerService < IssueTrackerService
     end
   end
 
+  def title=(value)
+    self.properties['title'] = value if self.properties
+  end
+
   def description
     if self.properties && self.properties['description'].present?
       self.properties['description']

lib/gitlab/import_export/import_export.yml

@@ -73,5 +73,7 @@ excluded_attributes:
 methods:
   statuses:
     - :type
+  services:
+    - :type
   merge_request_diff:
     - :utf8_st_diffs

spec/lib/gitlab/import_export/project.json

@@ -6918,6 +6918,7 @@
       "note_events": true,
       "build_events": true,
       "category": "issue_tracker",
+      "type": "CustomIssueTrackerService",
       "default": true,
       "wiki_page_events": true
     },

spec/lib/gitlab/import_export/project_tree_restorer_spec.rb

@@ -107,6 +107,12 @@ describe Gitlab::ImportExport::ProjectTreeRestorer, services: true do
         expect(Label.first.label_links.first.target).not_to be_nil
       end
 
+      it 'restores the correct service' do
+        restored_project_json
+
+        expect(CustomIssueTrackerService.first).not_to be_nil
+      end
+
       context 'Merge requests' do
         before do
           restored_project_json

spec/lib/gitlab/import_export/project_tree_saver_spec.rb

@@ -111,6 +111,10 @@ describe Gitlab::ImportExport::ProjectTreeSaver, services: true do
         expect(saved_project_json['issues'].first['label_links'].first['label']).not_to be_empty
       end
 
+      it 'saves the correct service type' do
+        expect(saved_project_json['services'].first['type']).not_to be_nil
+      end
+
       it 'has project feature' do
         project_feature = saved_project_json['project_feature']
         expect(project_feature).not_to be_empty
@@ -161,6 +165,7 @@ describe Gitlab::ImportExport::ProjectTreeSaver, services: true do
            commit_id: ci_pipeline.sha)
 
     create(:event, target: milestone, project: project, action: Event::CREATED, author: user)
+    create(:service, project: project, type: 'CustomIssueTrackerService', category: 'issue_tracker')
 
     project.project_feature.update_attribute(:issues_access_level, ProjectFeature::DISABLED)
     project.project_feature.update_attribute(:wiki_access_level, ProjectFeature::ENABLED)