New: Initial commit of the Ansible playbook

Evening! Here's an initial attempt at some Ansible playbooks. I ran `vagrant up` with Puppet and made a list of everything it did, then translated it into Ansible. The playbooks need tidying up (splitting into smaller playbooks for things like provisioning and use variables rather than hard coded paths), but this should run and you should have the same environment as you did with Puppet.

If someone could give it a go and feed back with anything that needs changing, it'd be appreciated