Add unmap to cinder for ceph
Add unmap to cinder for ceph

This matches the current default for nova.conf. Use unmap/discard if
t is enabled on the hypervisor. This option is new for mitaka.

TrivialFix

Change-Id: Id94c05e2ec8a65c75ec82afcd4150390f8b87ee2

GalenMa/kolla,negronjl/kolla,dardelean/kolla-ansible,nihilifer/kolla,GalenMa/kolla,mandre/kolla,intel-onp/kolla,mandre/kolla,mrangana/kolla,tonyli71/kolla,dardelean/kolla-ansible,coolsvap/kolla,stackforge/kolla,rahulunair/kolla,negronjl/kolla,coolsvap/kolla,stackforge/kolla,mandre/kolla,intel-onp/kolla,mrangana/kolla,dardelean/kolla-ansible,rahulunair/kolla,negronjl/kolla,coolsvap/kolla,tonyli71/kolla,openstack/kolla,openstack/kolla,toby82/kolla,stackforge/kolla,toby82/kolla,toby82/kolla,nihilifer/kolla