Add copying new rootwrap filters to Cinder upgrade
Add copying new rootwrap filters to Cinder upgrade

To fix bug 1488433 new rootwrap filters need to be created. This
commit adds copying of new volume.filters file to proper directory
to update rootwrap rules.

Change-Id: Ie25194997b94664ec14a0f94d09c167f4fad3b4d
Related-Bug: 1488433

dtroyer/grenade,openstack-dev/grenade,dtroyer/grenade,openstack-dev/grenade