/usr/lib/libhbmgmtclient.so is in pacemaker-mgmt-dev 2.0.0+hg1141-2.1ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libhbmgmtclient.so.0.0.0
/usr/lib/libhbmgmtclient.so.0.0.0