Bring over pretty_tox.sh from nova

- added full log for integration tests by default
- added env 'py27log' which allows to get log for unit-tests

Change-Id: I43ca330c82ffe100247102021fce1f00acb4d11a
Add support_status for OS::Cinder::VolumeType

Add support_status for new resource OS::Cinder::VolumeType.

Change-Id: I0f679f35de0bbec1d9263cccd97d2a5531c9dcd1
Merge "Bring over pretty_tox.sh from nova"