Change the role order in os-network

The migerate network database in openstack-network::server depends on
the network plugin package should be installed first, so I move the
os-network-server to the end of run list.

Closes-Bug: #1270708

Change-Id: I0ebc0c7d30dc2132e36eda0ae613e4f92f24361b
Add vagrantfile/environment for a working vagrant all-in-one using
nova-network

Implements: blueprint reference-havana-vagrant

- remove unused attrs from previous example vagrant.rb, and change to
  vagrant-aio-nova.json
- add Vagrantfile-aio-nova targeted specifically at an allinone using
  nova-network (other vagrantfiles can cover other deployments)
- Update CentOS box to 6.5
- Remove Vagrantfile and environments/vagrant.rb to avoid confusion
- allow multiple simultaneous vagrant up with different chef-zero
  servers
- add usage comments at top of file

Change-Id: I9e4145dd1f22efa7e423794bb122bde756884f40
Support v3 of yum cookbook

Upgrade yum to ~v3 and remove pinned python version.

blueprint yum-cookbook-v3-support

Change-Id: I83fdda8c72205f4dd2aa05eb84879876ffa8d810
Merge "Change the role order in os-network"
Merge "Support v3 of yum cookbook"
Merge "Add vagrantfile/environment for a working vagrant all-in-one using nova-network"