add ceilometer role
add heat role
add glance role
add neutron role
add nova-common role
add nova-control role
add nova-compute role
remove consolidated openstack-controller role
remove the outdated openstack-compute role
add mongodb role
update definitions of controllers and compute-nodes with separate roles
comment out the use of the keystone_manage module (not compatible with Icehouse yet)
add installation of sos-plugins-openstack into the common role
fix the inventory_hostname variable name error in the rabbitmq role
streamline rabbitmq policy definition
add haproxy handler to reload kernel parameters
correct the default region name in the metadata agent config
do not use rabbit_ha_queues
remove duplicates of the nova configuration files from nova-compute
add support for neutron-lbaas-agent