add graph Services to Roles

[muellerbe]

Infrastructure                   Role
cron                             controller
fluentd                          controller
kolla_toolbox                    controller
haproxy                          controller
elasticsearch                    controller
kibana                           controller
memcached                        controller
mariadb                          controller
redis                            controller

Network                          Role
openvswitch                      controller/network

Storage                          Role
Monitor (mons)                   storage
Manager (mgrs)                   storage
OSDs (osds)                      storage
iscsi                            controller
multipath                        controller

OpenStack Service                Role
keystone                         controller
horizon                          controller
glance                           controller
cinder                           controller
placement                        controller
nova-api                         controller
    -scheduler
    -conductor
    -novncproxy
    -compute-ironic
nova-compute                     compute
    -libvirt
    -ssh
neutron-server                   controller
neutron-openvswitch-agent        controller/compute
       -metadata-agent
       -l3-agent
       -dhcp-agent
ironic-api                       controller
      -conductor
      -inspector
      -pxe
      -neutron-agent
heat                             controller
gnocchi                          controller
...