Quarantine a flaky end-to-end test

Signed-off-by: Rémy Coutable <remy@rymai.me>

qa/qa/specs/features/browser_ui/4_verify/pipeline/create_and_process_pipeline_spec.rb

 # frozen_string_literal: true
 
 module QA
-  context 'Verify', :docker, quarantine: 'https://gitlab.com/gitlab-org/gitlab/issues/202149' do
+  context 'Verify', :docker, quarantine: { issue: 'https://gitlab.com/gitlab-org/gitlab/issues/202149', type: :flaky } do
     describe 'Pipeline creation and processing' do
       let(:executor) { "qa-runner-#{Time.now.to_i}" }
       let(:max_wait) { 30 }

qa/qa/specs/features/ee/browser_ui/6_release/multi-project_pipelines_spec.rb

@@ -3,7 +3,7 @@
 require 'securerandom'
 
 module QA
-  context 'Release', :docker do
+  context 'Release', :docker, quarantine: { issue: 'https://gitlab.com/gitlab-org/gitlab/issues/204838', type: :flaky } do
     describe 'Multi-project pipelines' do
       let(:upstream_project_name) { "upstream-project-#{SecureRandom.hex(8)}" }
       let(:downstream_project_name) { "downstream-project-#{SecureRandom.hex(8)}" }