haproxy logs shows redis down: redis/overcloud-controller-1.internalapi.localdomain is DOWN, reason: Layer7 timeout

Issue

• In haproxy journalctl logs, redis is shown as DOWN when it is actually seen as running in pcs status output:

overcloud-controller-0 haproxy[146671]: Server redis/overcloud-controller-1.internalapi.localdomain is DOWN, reason: Layer7 timeout, info: " at step 5 of tcp-check (expect string 'role:master')", check duration: 10001ms. 2 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue.
overcloud-controller-0 haproxy[146671]: Server redis/overcloud-controller-2.internalapi.localdomain is DOWN, reason: Layer7 timeout, info: " at step 5 of tcp-check (expect string 'role:master')", check duration: 10001ms. 1 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue.