Version 4.2.8.2-1.0.9.el7

Per the info near the bottom of /usr/share/ovirt-engine/services/ovirt-engine/ovirt-engine.conf I should be able to create this file,

/etc/ovirt-engine/engine.conf.d/99-ansible-playbook-timeout.conf

and place in the file these contents,

ANSIBLE_PLAYBOOK_EXEC_DEFAULT_TIMEOUT=150

and extend the playbook timeout.  It doesn't work, still times out after 30 minutes.  Any suggested workarounds?