base.yml: Add some template packages
We're going to load these badboys in our macro files soon, so that
we can autopopulate the Collector + Spec to have easy-to-manage
automatic package splits.
In future this is going to be extended to capabilities + subscriptions
so we're keeping the list as small as meaningly possible.
Signed-off-by: Ikey Doherty <email@example.com>