Merge branch 'qa-qurantine-ldap-admin-sync-test' into 'master'

Quarantine admin sync test

See merge request gitlab-org/gitlab-ee!9231

qa/qa/specs/features/browser_ui/1_manage/ee_ldap/admin_ldap_sync_spec.rb

 # frozen_string_literal: true
 
 module QA
-  context 'Manage', :orchestrated, :ldap_no_tls, :ldap_tls do
+  # https://gitlab.com/gitlab-org/quality/nightly/issues/49
+  context 'Manage', :orchestrated, :ldap_no_tls, :ldap_tls, :quarantine do
     describe 'LDAP admin sync' do
       it 'Syncs admin users' do
         Runtime::Browser.visit(:gitlab, Page::Main::Login)