Revise functional test to adapt to latest API change
Revise functional test to adapt to latest API change

This patch revises functional test to adapt to latest API change.
Hope it can provide a clean basement for more tests of further
API interface rework.

Change-Id: Id93f2ecb164c56658cd1e9dd69f4a23fb458f17e

tengqm/senlin-container,openstack/senlin,stackforge/senlin,openstack/senlin,tengqm/senlin-container,openstack/senlin,stackforge/senlin