Instead of hardcoding specific supported tunable options, we just pass key as an option to haproxy config. This change might break deployments during upgrades, since format of values in variable has changed, but appropriate release note was written We also increase maxrewrite by default, as otherwise usage of CSP leads to 500 error. Change-Id: I949960420ed5dbd6d58f0de7dae0ac629a85b7fc Related-Bug: https://github.com/haproxy/haproxy/issues/1597 Needed-By: https://review.opendev.org/c/openstack/openstack-ansible-os_horizon/+/844815