Exit if validation fails

Currently, it is still proceeding
which means that the running version can
be updated even when a failure occurs.
Merge pull request #55 from bodepd/exit_on_failed_validation

Exit if validation fails
Added rjil::rabbitmq for contrail dependency

Added rabbitmq management code in rjil::rabbitmq for contrail
dependency.
Use Dan's environment during AT stage
Merge pull request #58 from sorenh/reconcile-environments

Use Dan's environment during AT stage
Merge pull request #57 from hkumarmk/contrail_rabbitmq

Added rjil::rabbitmq as contrail dependency
Merge pull request #56 from bodepd/glance

Added glance
Added rjil::zookeeper

Added contrail dependency zookeeper.
Added security banner on server logins

Added content to sync to /etc/issue or /etc/issue.net.
Configured SSH server to print banner.
Added unit tests for rjil::system.
Added redis as contrail dependency
Merge pull request #63 from hkumarmk/contrail_redis

Added redis as contrail dependency
Merge pull request #60 from hkumarmk/contrail_zookeeper

Added rjil::zookeeper
Merge pull request #61 from hkumarmk/added_banner

Added security banner on server logins
Install modules in /usr/share rather than /etc
Merge pull request #65 from sorenh/master

Install modules in /usr/share rather than /etc
Use fgrehm/trusty64-lxc when using the LXC provider
Merge pull request #66 from sorenh/lxc

Use fgrehm/trusty64-lxc when using the LXC provider
Use environment file to populate Vagrant config
Don't try to install Puppet every single time.
Don't hardcode IP for proxy. Rely on environment.