jail version displays incorrect when -m src= is used.

[Henry Vogt]

Dear poudriere maintainers,

just a cosmetical issue, but nevertheless incorrect:
having a jail created (on a pre-existing compiled world at-p4) : e.g.
# poudriere jail -c -j 110amd64 -m src=/usr/src/11 -v 11.0-RELEASE
# poudriere jail -i -j 110amd64
will correctly display as version 11.0-RELEASE-p4.
after (on an then updated -p5 world) upgrading with
# poudriere jail -u -j 110amd64
# poudriere jail -i -j 110amd64
still displays previous version (when jail was created) , at least when -m src=<path> is used:

Jail version:      11.0-RELEASE-p4 (instead of 11.0-RELEASE-p5)
the jail was updated: note the correctly updated time, e.g.
Jail updated:     2016-12-22 12:16:36

Destroying and recreating the entire jail shows, of course, the correct version.

Best
Henry

-- 
Netzwerk- und System Administration am MPI Campus Tübingen.
Email: hv at tuebingen.mpg.de
Tel. 07071/601-511