Refactor api test_common to use ddt library
Refactor api test_common to use ddt library

Change-Id: I2f9f5dc352fe509ef7f36e08248a311db6b526bb

eharney/cinder,Datera/cinder,mahak/cinder,Datera/cinder,j-griffith/cinder,phenoxim/cinder,eharney/cinder,mahak/cinder,openstack/cinder,openstack/cinder,phenoxim/cinder,ge0rgi/cinder,j-griffith/cinder