Comment 2 for bug 1606887

Similar failure has been found on recent Swarm for 9.1

https://product-ci.infra.mirantis.net/job/9.x.system_test.ubuntu.support_hugepages/16/testReport/%28root%29/prepare_release/

sys_test.log is in attachement

Was able to access keystone manually without any issue on those machines

It blocks 10+ tests (in fact all prepare-release dependent tests), so swarm-blocker is added...