track apt cookbook repo as submodule.

Signed-off-by: Emmanuel Roullit <emmanuel.roullit@gmail.com>
track apt cookbook v1.7.0

Signed-off-by: Emmanuel Roullit <emmanuel.roullit@gmail.com>
include apt cookbook to vagrant

Signed-off-by: Emmanuel Roullit <emmanuel.roullit@gmail.com>
the apt cookbook makes sure all installed & up-to-date

Signed-off-by: Emmanuel Roullit <emmanuel.roullit@gmail.com>
when the apt recipe is added, apt-get udpate is run automatically

Signed-off-by: Emmanuel Roullit <emmanuel.roullit@gmail.com>
it's not recommanded to upgrade package with chef.

More info:
http://stackoverflow.com/questions/15080876/apt-get-update-and-apt-get-upgrade-in-chef

Signed-off-by: Emmanuel Roullit <emmanuel.roullit@gmail.com>