Many tests check whether there is a org/loc present if not then they return []
which is not appropriate as after @tbrisker's changes, taxonomies can not be
blank.

```

trait :with_subnet do
      subnet do
        FactoryBot.build(:subnet_ipv4,
          :organizations => host ? [host.organization] : [],
          :locations => host ? [host.location] : [])
      end
    end

```

The `host_related.rb` file has many such test cases.