Define collector roles

- Add collector-{1,2}.box.sealevelresearch.com to Ansible
- ansible-surge-model-collector role
- New jenkins-deploy.sh script to run ansible
- Use Ansible Vault for storing credentials
Merge pull request #11 from sealevelresearch/add-collector-machines

Define collector roles
Update README for working inside virtualenv
Merge pull request #13 from sealevelresearch/update-readme

Define collector roles
Bump Jenkins version