Updated openstack/openstack
Project: openstack/cinder  581d8ada14d2541be6784a730bb3a70ea8d52b9c

Add genconfig tox job for sample config file generation

Wrap generate_sample.sh in tox. This will make sure needed
dependencies are installed prior to sample config file generation.

Change-Id: I426be3416931a385f99ca5270943a0f10c60f346