lxd/storage/drivers/driver/lvm/volumes: d.runFiller usage
lxd/storage/drivers/driver/lvm/volumes: d.runFiller usage

This allows non-thin volumes as well as image volumes to be unsafely resized during image unpack.
This is because non-thin pools don't use cached image volumes.

Fixes #10343

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

lxc/lxd,hallyn/lxd,hallyn/lxd,hallyn/lxd,stgraber/lxd,stgraber/lxd,stgraber/lxd,lxc/lxd,lxc/lxd,lxc/lxd,stgraber/lxd,stgraber/lxd,hallyn/lxd,lxc/lxd,hallyn/lxd,lxc/lxd,stgraber/lxd,stgraber/lxd,hallyn/lxd,lxc/lxd