Add `development-1` to development access control list

- Requests coming in on development-1 vm come through as `10.0.0.100` which is referenced as follows in `/etc/hosts`:

```10.0.0.100  development-1.internal  development-1```

- This change adds the name of the machine as we reference it in the Vagrantfile, which I thought seemed the most correct way of doing this.
- Alternatively we could add a `localhost` alias on 10.0.0.100 in `/etc/hosts`
Copy purging from default.vcl

- Wildcard purging wasn't in the development vcl.
- This should be cleaned up and consolidated by whoever picks up #70928834
- For now I'm just trying to make the dev and default vcl files work in as close a manner as possible.
Merge pull request #391 from alphagov/development_machine_in_vcl

Development machine in vcl