SecurityOnion Automated so-setup on Ubuntu 20.04

[jcac100]

[dougburks]

@jertel @TOoSmOotH

From #1720:

Tagging Individuals
Please do not tag an individual in a discussion unless that individual has already volunteered to help you in that discussion.

I also understand that these files are for internal testing only and are not supported

From https://github.com/Security-Onion-Solutions/securityonion/blob/master/setup/automation/README.txt:

These automation files were designed for internal Security Onion testing. 

While you may be able to make them work for your use case, we do not provide free support for them, and support for paying customers is limited to best effort.