Openstack Packstack: nss.load missing from packstack, httpd unable to start

Issue

• pack-stack OpenStack: Single-Node Deployment failing with httpd service error.

ERROR : Error appeared during Puppet run: 10.10.1.xxx_keystone.pp
Error: /Stage[main]/Apache::Service/Service[httpd]: Failed to call refresh: Could not restart Service[httpd]: Execution of '/usr/bin/systemctl restart httpd' returned 1: Job for httpd.service failed. See 'systemctl status httpd.service' and 'journalctl -xn' for details.
You will find full trace in log /var/tmp/packstack/xxx-xxx-cX0Yuk/manifests/10.10.1.xxx_keystone.pp.log