We added the target composition a while back but never
really finished it. We created a set of interface methods
and had them call the target class mostly thinking we'd
want this when adding FC.
It turns out that doing a regular composition and using
get_attr will actually work fine when the FC target is
added, so re factor this and make it a true composition
where both objects inherit attributes from each other.
Code Review / openstack-build / cinder-build.git / commit