soup: create /etc/apt/apt.conf.d/10periodic

[dougburks]

Problem
Running soup on a sensor checks to see if the master is up to date but that is only accurate if apt update has recently been run on the master.

Solution
soup should check to see if /etc/apt/apt.conf.d/10periodic exists. If not, it should create it with the following content:

APT::Periodic::Update-Package-Lists "1";

This will cause the box to do a daily apt update, which should just update package lists (available updates) without actually downloading any updates.

[dougburks]

Submitted for testing:
https://groups.google.com/d/topic/security-onion-testing/q8eEQ8sJweM/discussion

[dougburks]

Published:
https://blog.securityonion.net/2019/02/securityonion-sostat-20120722.html