Code review comment for lp:~fwereade/pyjuju/maas-name-constraint

*** Submitted:

Implement maas-name constraint

Descended from lp:~julian-edwards/juju/name-constraints; but uses
new-style
constraints registration.

Also uses a custom ubuntu-series constraint to forbid use of charms
written
for systems we can't yet provision with MAAS.

R=allenap, hazmat
CC=
https://codereview.appspot.com/5938050

https://codereview.appspot.com/5938050/