Patch fix ood firewall and services role

Created by: eesaanatluri

1. Removes unnecessary start of httpd24-httpd service during build OOD build where just enabling the services would suffice. Services can be started or restarted in ops phase i.e. post-deploy.
2. Use selinux ansible module so that the task is idempotent and it would not error out if selinux is already disabled.