packager: Fix apt invocations
packager: Fix apt invocations

Exported env vars (DEBIAN_FRONTEND=noninteractive) don't pass through
the sudo barrier.

Change-Id: Ie772d142f446ea24fb7f96f507e9ff8955926757

stuartbman/mediawiki-vagrant,stuartbman/mediawiki-vagrant,wikimedia/mediawiki-vagrant,wikimedia/mediawiki-vagrant,wikimedia/mediawiki-vagrant,stuartbman/mediawiki-vagrant,stuartbman/mediawiki-vagrant,stuartbman/mediawiki-vagrant,wikimedia/mediawiki-vagrant,stuartbman/mediawiki-vagrant,wikimedia/mediawiki-vagrant,wikimedia/mediawiki-vagrant,stuartbman/mediawiki-vagrant