Automatic Auto-Provisioning

[gerhalt]

Right now, instances need to be provisioned remotely after they're launched. It'd be much more robust to run Ansible provisioning locally on the box as part of the bootstrap process. I think the easiest way to set this up is:

1. Create a new set of tagged Ansible tasks that archive the local /ansible contents and push them to the same S3 minecraft bucket already used for server archives and backups.
2. Add user data to the launch configuration, which should:
   a. Install any prerequisites needed to run Ansible locally.
   b. Pull and extract the archive created above to a temporary directory.
   c. Run the startup playbook.