...
- Upgrading kernels and software on the controller node
- Upgrading Horizon (the web interface to OpenStack) to 2015.1.1-1.el7 from 2015.1.0-7.el7
- Testing the addition of new storage servers, but restricting access to specific projects (like the way Nova handles availability zones)
- Possibly installing Ceilometer
- Possibly uninstalling the aging and possibly deprecated Amazon EC2 API that comes with OpenStack and replacing it with a third-party plugin
...