Comment 2 for bug 1403390

Reviewed: https://review.openstack.org/142408
Committed: https://git.openstack.org/cgit/stackforge/fuel-main/commit/?id=1efbeeb69df3f508be3c881b6fbb01ae4e1a56ef
Submitter: Jenkins
Branch: master

commit 1efbeeb69df3f508be3c881b6fbb01ae4e1a56ef
Author: Alexei Sheplyakov <email address hidden>
Date: Wed Dec 17 11:41:57 2014 +0300

    image/ubuntu: suppress the packages' configuration dialogs

    make iso stops during creation of the Ubuntu chroot (intended for image
    based provisioning) and displays packages' configuration dialogs
    (in particular postfix). Force a non-interactive packages installation.
    While at it suppress the warnings regarding an unsupported locale.

    Closes-bug: #1403390
    Related-bug: #1383641
    blueprint support-ubuntu-trusty
    Change-Id: I8c104a41d267e30feea72619ae4ad27b6d59a562