Set low urgency SLI for Verify:Testing endpoints

- GET /api/projects/:id/pipelines/:pipeline_id/test_report
- POST /api/jobs/:id/artifacts
- POST /api/jobs/:id/artifacts/authorize
- GET /api/jobs/:id/artifacts
- GET /api/projects/:id/jobs/artifacts/:ref_name/raw/*artifact_path

lib/api/ci/job_artifacts.rb

@@ -47,7 +47,7 @@ module API
           requires :artifact_path, type: String, desc: 'Artifact path'
         end
         route_setting :authentication, job_token_allowed: true
-        get ':id/jobs/artifacts/:ref_name/raw/*artifact_path',
+        get ':id/jobs/artifacts/:ref_name/raw/*artifact_path', urgency: :low,
           format: false,
           requirements: { ref_name: /.+/ } do
             authorize_download_artifacts!
@@ -70,7 +70,7 @@ module API
           requires :job_id, type: Integer, desc: 'The ID of a job'
         end
         route_setting :authentication, job_token_allowed: true
-        get ':id/jobs/:job_id/artifacts' do
+        get ':id/jobs/:job_id/artifacts', urgency: :low do
           authorize_download_artifacts!
 
           build = find_build!(params[:job_id])

lib/api/ci/pipelines.rb

@@ -179,7 +179,7 @@ module API
         params do
           requires :pipeline_id, type: Integer, desc: 'The pipeline ID'
         end
-        get ':id/pipelines/:pipeline_id/test_report', feature_category: :code_testing do
+        get ':id/pipelines/:pipeline_id/test_report', feature_category: :code_testing, urgency: :low do
           authorize! :read_build, pipeline
 
           present pipeline.test_reports, with: TestReportEntity, details: true

lib/api/ci/runner.rb

@@ -247,7 +247,7 @@ module API
           optional :artifact_type, type: String, desc: %q(The type of artifact),
                                   default: 'archive', values: ::Ci::JobArtifact.file_types.keys
         end
-        post '/:id/artifacts/authorize', feature_category: :build_artifacts do
+        post '/:id/artifacts/authorize', feature_category: :build_artifacts, urgency: :low do
           not_allowed! unless Gitlab.config.artifacts.enabled
           require_gitlab_workhorse!
 
@@ -283,7 +283,7 @@ module API
                                     default: 'zip', values: ::Ci::JobArtifact.file_formats.keys
           optional :metadata, type: ::API::Validations::Types::WorkhorseFile, desc: %(The artifact metadata to store (generated by Multipart middleware))
         end
-        post '/:id/artifacts', feature_category: :build_artifacts do
+        post '/:id/artifacts', feature_category: :build_artifacts, urgency: :low do
           not_allowed! unless Gitlab.config.artifacts.enabled
           require_gitlab_workhorse!