Correct a variable reference in prior code merge.
Fix how interfaces is updated with interface fact

Was broken when handling a bridge or bonded (possibly others) interface
Merge branch 'fix-a10d74f7' of git://github.com/sfromm/ansible into devel

Conflicts:
	library/setup
Remove stray file
enforce no enteractiveness installing pkg with apt

use the same env vars and dpkg options as for the upgrade function
also link check mode to --simulate option when installing a pkg

fixes #2763
Merge pull request #2771 from sergevanginderachter/apt-noninteractive-install

enforce no enteractiveness installing pkg with apt