Of course: that's Red Hat. Have you heard about Oracle Openstack
Icehouse commercial offering? That one is based on top of RDO [0]. ;)
Both packaging configuration [1] and repositories with downstream
patches included on top of upstream releases [2] are available for
anyone. Fork, reuse, contribute.
BTW some of your questions are already answered in RDO FAQ [3].
[0]:
https://openstack.redhat.com/forum/discussion/985/red-hat-welcomes-oracle-to-the-rdo-community
[1]: http://pkgs.fedoraproject.org/cgit/openstack-neutron.git/
[2]: https://github.com/redhat-openstack
[3]: https://openstack.redhat.com/Frequently_Asked_Questions
I hope that helps,
/Ihar