main/lvm2: upgrade to 2.03.15
Upgrade to 2.03.15.
Use thin-provisioning-tools rather than internal thin functionality.
Disable new VDO features as requires VDO which is not currently packaged for Alpine.
lvmconf is not longer provided.
Update patches to apply cleanly to new version.
Fix lvm2 init.d script so that on shutdown it does not signal an error - the vgchange called during shutdown redirects both stdout and stderr to /dev/null but the error code is left as is - without this change then an error is signaled during a normal shutdown (as vgchange cannot deactivate the LV used for the rootfs).