Merge "Added telegraf role"

ansible/group_vars/all.yml

ansible/inventory/all-in-one

ansible/inventory/multinode

ansible/roles/telegraf/defaults/main.yml

ansible/roles/telegraf/meta/main.yml

ansible/roles/telegraf/tasks/config.yml

ansible/roles/telegraf/tasks/deploy.yml

ansible/roles/telegraf/tasks/do_reconfigure.yml

ansible/roles/telegraf/tasks/main.yml

ansible/roles/telegraf/tasks/pull.yml

ansible/roles/telegraf/tasks/reconfigure.yml

ansible/roles/telegraf/tasks/start.yml

ansible/roles/telegraf/tasks/upgrade.yml

ansible/roles/telegraf/templates/telegraf.conf.j2

ansible/roles/telegraf/templates/telegraf.json.j2

ansible/site.yml

etc/kolla/globals.yml