cubicweb #2714092 cubicweb-ctl exlog: no such command [open]

The manual for version 3.15.4 suggest to run cubicweb-ctl exlog.

The command does not seem to be available in CubicWeb 3.15.9 (installed on Ubuntu 12.04 LTS using *.db packages) :

$ cubicweb-ctl exlog /var/log/cubicweb/localizer-rql.log
ERROR: no exlog command

usage: cubicweb-ctl <command> [options] <command argument>...
done in<not specified>
closed by<not specified>