/usr/lib/ganeti/iallocators/hail is in ganeti-htools 2.16.0~rc2-1build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ganeti/iallocators/../2.16/usr/lib/ganeti/iallocators/hail
/usr/lib/ganeti/iallocators/../2.16/usr/lib/ganeti/iallocators/hail