First pass at converting inception to use vagrant.
Removes apt-get update shell provisioner in favour of cookbook solution.
Removes create_server rake task.
Clarifies provider-setting logic. Improves ssh keypair detection.
Overrides openssh to permit_root_login for now.
Works with virtualbox provider.
First attempt at support for managed-servers provider.
Fixes hostname.
Makes vagrant use hostname in config.yml.
Patches jenkins-job-builder::default to install argparse pkg.

Moves to using patched python and jenkins-job-builder cookbooks until
PRs accepted. jenkins-job-builder now installs argparse when only
python26 is available, so no need to install python27 from source.
Adds vagrant-cachier support.
Now gives databag users sudo privs via group rather than individually.
Adds admin:write_ip task to get IP from vagrant.
Updates jenkins cookbook so ssh keypair generated automatically.
Fixes deprecation warning in jenkins-job-builder definition.
Fixes domains and hostnames.
Uses the correct user for rackspace.
Merge pull request #29 from myplanetdigital/29-vagrant-integration

Leverages vagrant for both local and remote jenkins servers.