Default return actions

[chelseakomlo]

• [ ] Blacklist default should be retAllow()
• [ ] Whitelist default should be kill if enforce, otherwise trace

[chelseakomlo]

I think these can be assigned in the unifier.

[chelseakomlo]

It isn't clear to me how we are differentiating whitelists and blacklists once the policy has been parsed. I'm going to add that, but we can revert if there is an existing solution to this.

[olabini]

To be crystal clear here - the difference between whitelists and blacklists only becomes interesting once we are compiling the policy - it is mostly concerned with what the default actions are etc.