Add Consul support

Add the basic Consul framework and monitor etcd as an example.
Handle consul discovery token in Vagrantfile, too.
Add separate vagrant env for lxc due to network differences
Add a tags argument to be passed on to consul
Add checks for ssh, mysql, haproxy, keystone, etc.
Only trigger consul-reload on systems with Consul
Fix indentation style (tabs vs. spaces)
Give preference to listen_ports for monitoring
Choose better IPs for things
Merge pull request #70 from sorenh/consul

Add Consul support
Merge pull request #76 from bodepd/add_bodepd_user

Add bodepd user and key to all machines
Commit vbox specific vagrant environment

This commits adds a specific deployment environment
based on vagrant with the virtualbox provider.

It also removes the dan environment which was previously
defining the same environment.
Add data overrides for acceptance test deployments

Add cross data lookups to support openstack deployments.