updated vagrant configuration to use the same box file as the fellowship for the sake of consistency
Merge branch 'master' of https://github.com/cbechberger/openstack-chef into cmfl
added plugin management recipe to rabbitmq-server role. Added attribute to single-controller role to enable rabbitmq_management plugin for the sake of monitoring
Merge branch 'master' of https://github.com/cbechberger/openstack-chef into cmfl