- Follow what other OpenStack projects are doing
- Respect the OpenStack guidelines about import
- Remove common packages
Change-Id: I4a3f598537ed5f54edab79471d074a46fa99ab52
In some part in the code we import objects.
In the Openstack style guidelines they recommend to import only
modules.
http://docs.openstack.org/developer/hacking/#imports
Change-Id: I58b2dab1a46128893648630edba615e2592040ac