lxd/storage/drivers/generic: Adds refresh arg to genericCopyVolume
lxd/storage/drivers/generic: Adds refresh arg to genericCopyVolume

Allows the function to use the storage driver's CreateVolume() function bringing it inline with genericCreateVolumeFromMigration() and allowing it to work with non-dir drivers, such as LVM, that still use rsync for syncing.

Also switches to revert package for simpler reverting.

Signed-off-by: Thomas Parrott <6b778ce645fb0e3dde76d79eccad490955b1ae74@canonical.com>

hallyn/lxd,mjeanson/lxd,stgraber/lxd,hallyn/lxd,atxwebs/lxd,hallyn/lxd,Skarlso/lxd,lxc/lxd,stgraber/lxd,Skarlso/lxd,mjeanson/lxd,stgraber/lxd,stgraber/lxd,hallyn/lxd,lxc/lxd,hallyn/lxd,Skarlso/lxd,lxc/lxd,atxwebs/lxd,lxc/lxd,lxc/lxd,hallyn/lxd,Skarlso/lxd,atxwebs/lxd,mjeanson/lxd,stgraber/lxd,atxwebs/lxd,stgraber/lxd,lxc/lxd,lxc/lxd,stgraber/lxd