This reverts commit 466a19f18f12cb77b45aa7c7a272fae7c45c4c93.
Also this reverts commit 4f74b224fad7bf9ca665d70a66c79c98cf8d5674.
Manila has decided to remove LXD from the Mitaka release.
http://lists.openstack.org/pipermail/openstack-dev/2016-March/089522.html
Change-Id: I3c4b15e8c9d92c874be754205b0b981151809cc1