Fix missing expose_path for license api paths

This will fixes from occurring when relative_url_root is used.

https://gitlab.com/gitlab-org/gitlab-ee/issues/11121

ee/app/helpers/ee/gitlab_routing_helper.rb

@@ -32,7 +32,7 @@ module EE
     end
 
     def license_management_api_url(project)
-      api_v4_projects_managed_licenses_path(id: project.id)
+      expose_path(api_v4_projects_managed_licenses_path(id: project.id))
     end
 
     def license_management_settings_path(project)

ee/app/serializers/ee/merge_request_widget_entity.rb

@@ -68,7 +68,7 @@ module EE
         end
 
         expose :managed_licenses_path do |merge_request|
-          api_v4_projects_managed_licenses_path(id: merge_request.target_project.id)
+          expose_path(api_v4_projects_managed_licenses_path(id: merge_request.target_project.id))
         end
 
         expose :can_manage_licenses do |merge_request|

ee/changelogs/unreleased/11121-fix-unexposed-api-paths.yml

+---
+title: Fix relative url root issues with license management
+merge_request: 12488
+author:
+type: fixed

ee/spec/serializers/merge_request_widget_entity_spec.rb

@@ -10,6 +10,7 @@ describe MergeRequestWidgetEntity do
   let(:request) { double('request', current_user: user) }
 
   before do
+    stub_config_setting(relative_url_root: '/gitlab')
     project.add_developer(user)
   end
 
@@ -154,7 +155,7 @@ describe MergeRequestWidgetEntity do
     end
 
     describe '#managed_licenses_path' do
-      let(:managed_licenses_path) { api_v4_projects_managed_licenses_path(id: project.id) }
+      let(:managed_licenses_path) { expose_path(api_v4_projects_managed_licenses_path(id: project.id)) }
 
       before do
         create(:ee_ci_build, :legacy_license_management, pipeline: pipeline)