Comment 8 for bug 1759145

The mlocate usage is in hardening in charmhelpers (this is on the ceph-osd charm).

hooks/charmhelpers/contrib/hardening/host/checks/suid_sgid.py
57: '/usr/bin/mlocate',

Realistically, charmhelpers ought to ensure that it is installed before using it; i.e. a charm could use the hardening feature and then it would randomly blow up at some other point.

I'll also add a bug/reference to this in charmhelpers git issues:
https://github.com/juju/charm-helpers/issues/179