* Define the volume driver interface that all volume drivers
need to inherit. Currently, the interface has three methods:
attach, detach, and bind_mount. Attach should connect to
the volume and mount the volume to a specific path in the
filesystem for containers to bindmount. Detach should do
the opposite of attach. Bind_mount returns the host and
container paths that the binding should use.
* Implement the first volume driver for Cinder. This driver
is for mounting/unmounting Cinder volumes. It uses the
CinderWorkflow API to attach/detach Cinder volumes and
using the mounting utility to mount the attached volumes
to the filsystem.
Partial-Implements: blueprint direct-cinder-integration
Change-Id: I602bdf7127f298a2193d3143b05188ec8ebfb64e
c7369adbe5