Verified with version atomic-openshift-utils-3.4.59-1.git.0.d813eb7, the code has effect, installation succeed.
[root@ansible ~]# ansible-playbook -i hosts -v /usr/share/ansible/openshift-ansible/playbooks/byo/config
TASK [os_firewall : Wait 10 seconds after disabling firewalld] *****************
Monday 06 February 2017 07:15:54 +0000 (0:00:01.452) 0:29:57.164 *******
Pausing for 10 seconds
(ctrl+C then 'C' = continue early, ctrl+C then 'A' = abort)
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.