mdt: Add an on-distro apt repository for package installs

This adds a local apt repository to disk in /var/cache/mdt/packages in
preparation for the "mdt install" command to work. Effectively, the install
command will make use of a local apt repository for installing a package to help
with fetching package dependencies using the standard apt mechanisms.

Change-Id: I349aa68b1e59694bf20a43ba274cec631954153c
3 files changed
tree: 95e9557fc0d73a45c0611db6caf87e6328f63c4b
  1. debian/
  2. etc/