fix(requirements): use git https over ssh url

- When the repo is opened, this will allow builds to be performed without
  ssh credentials for git
add(Dockerfile): Add a dockerfile
add(travis-ci): Configure travis-ci support
fix(travis): Specify python version
fix(travis): We do not need env set
Merge pull request #40 from rackerlabs/jay/DockerReady

WIP: Changes for post-repo-opening
bump to latest teeth-rest
fix(README): Remove link to jenkins

- Builds performed via travis-ci now, remove link to non-public jenkins
Merge pull request #43 from rackerlabs/jay/RemoveJenkins

fix(README): Remove link to jenkins
Merge branch 'master' of ssh://github.com/racker/teeth-overlord
Merge branch 'master' into agent-client
add configdrive generator