maas cli writes deprecation warning to stdout

[Scott Moser]

installed maas from experimental ppa on trusty, tried to create an admin, get its api keys and start using the cli.
However, the 'maas-region-admin apikey' command writes a deprecation warning to stdout rather than stderr.
That means that doing this no longer works:
 $ apikey=$( maas-region-admin apikey --username=smoser )
 $ maas login "smoser" "http://127.0.0.1/MAAS/api/1.0" $apikey

Details below.

$ dpkg-query --show "*maas*"
maas 1.8.0~alpha6+bzr3625-0ubuntu1~trusty1
maas-cli 1.8.0~alpha6+bzr3625-0ubuntu1~trusty1
maas-cluster-controller 1.8.0~alpha6+bzr3625-0ubuntu1~trusty1
maas-common 1.8.0~alpha6+bzr3625-0ubuntu1~trusty1
maas-dhcp 1.8.0~alpha6+bzr3625-0ubuntu1~trusty1
maas-dns 1.8.0~alpha6+bzr3625-0ubuntu1~trusty1
maas-proxy 1.8.0~alpha6+bzr3625-0ubuntu1~trusty1
maas-region-controller 1.8.0~alpha6+bzr3625-0ubuntu1~trusty1
maas-region-controller-min 1.8.0~alpha6+bzr3625-0ubuntu1~trusty1
python-django-maas 1.8.0~alpha6+bzr3625-0ubuntu1~trusty1
python-maas-client 1.8.0~alpha6+bzr3625-0ubuntu1~trusty1
python-maas-provisioningserver 1.8.0~alpha6+bzr3625-0ubuntu1~trusty1

$ maas-region-admin createadmin "--username=smoser" --<email address hidden> --password=password
$ echo $?
0
$ maas-region-admin apikey --username=smoser > cmd.out 2> cmd.err
$ echo $?
0

$ ls -l cmd.out cmd.err
-rw-r--r-- 1 root root 0 Mar 12 13:38 cmd.err
-rw-r--r-- 1 root root 347 Mar 12 13:38 cmd.out

$ cat cmd.out
2015-03-12 13:38:18 [py.warnings] WARNING: /usr/lib/python2.7/dist-packages/maasserver/management/commands/apikey.py:101: DeprecationWarning: The use of AUTH_PROFILE_MODULE to define user profiles has been deprecated.
  tokens = user.get_profile().get_authorisation_tokens()

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[Raphaël Badin (rvb)]

The warning is coming from Django, we have to silence it/print it to stderr. See http://django.readthedocs.org/en/latest/releases/1.5.html#auth-profile-module for details.