Yes. I've used this, but I'll try again as there's seems to be new updates.
Stable Branch
*Skip all repos mentioned above, other than epel-release which is still
required.*
Enable latest RDO Stable Delorean repository for all packages
sudo curl -o /etc/yum.repos.d/delorean-liberty.repo
https://trunk.rdoproject.org/centos7-liberty/current/delorean.repo
Enable the Delorean Deps repository
sudo curl -o /etc/yum.repos.d/delorean-deps-liberty.repo
http://trunk.rdoproject.org/centos7-liberty/delorean-deps.repo
On Fri, Jun 3, 2016 at 11:10 AM, Christopher Brown <cbrown2(a)ocf.co.uk>
wrote:
 No, Liberty deployed ok for us.
 It suggests to me a package mismatch. Have you completely rebuilt the
 undercloud and then the images using Liberty?
 On Fri, 2016-06-03 at 11:04 +0100, Pedro Sousa wrote:
 > AttributeError: 'module' object has no attribute 'PortOpt'
 --
 Regards,
 Christopher Brown
 OpenStack Engineer
 OCF plc
 Tel: +44 (0)114 257 2200
 Web: 
www.ocf.co.uk
 Blog: blog.ocf.co.uk
 Twitter: @ocfplc
 Please note, any emails relating to an OCF Support request must always
 be sent to support(a)ocf.co.uk for a ticket number to be generated or
 existing support ticket to be updated. Should this not be done then OCF
 cannot be held responsible for requests not dealt with in a timely
 manner.
 OCF plc is a company registered in England and Wales. Registered number
 4132533, VAT number GB 780 6803 14. Registered office address: OCF plc,
 5 Rotunda Business Centre, Thorncliffe Park, Chapeltown, Sheffield S35
 2PG.
 If you have received this message in error, please notify us
 immediately and remove it from your system.