Fix admin LDAP sync test

qa/qa/specs/features/ee/browser_ui/1_manage/ldap/admin_ldap_sync_spec.rb

@@ -54,7 +54,7 @@ module QA
           user = Struct.new(:ldap_username, :ldap_password).new('adminuser1', 'password')
 
           QA::Support::Retrier.retry_until(exit_on_failure: true, sleep_interval: 3, max_attempts: 5) do
-            login_page.sign_in_using_ldap_credentials(user)
+            login_page.sign_in_using_ldap_credentials(user: user)
           end
         end
       end