python: support size in get_lvb
Add a size parameter to allow the user choose how much data to get back,
the API will now look like this:
sanlock.get_lvb(lockspace, resource, disks, size)
Signed-off-by: Benny Zlotnik <bzlotnik@redhat.com>
Signed-off-by: Nir Soffer <nsoffer@redhat.com>