Code review comment for ~jslarraz/ubuntu-security-tools:add-apt-source-to-autopkgtest

Yup, agree it is really odd. It has took me forever realize what was happening...

Considering how hacky it looks and that we really want to get rid of it as soon as possible I wonder if it would be better to keep it in a separate branch we can pull when/if need to run autopkgtest for noble instead of merging to master. I'm not completely sure.

What's your opinion on that?