Remove old import path in barbican
Remove old import path in barbican

Direct import of barbicanclient is being deprecated for
`barbicanclient.containers`, we should use
`barbicanclient.v1.containers` instead.

Change-Id: I340099ecf6649e7a443712a448a1504ec2e6d8ea

noironetworks/heat,openstack/heat,noironetworks/heat,openstack/heat