Add Ironic to telegraf plugin services list

Change-Id: Iee2aa3ebef187db3c194cf3f0e2d2c15f6958f5c
Related-PROD: PROD-32734
diff --git a/keystone/meta/telegraf.yml b/keystone/meta/telegraf.yml
index 19882c7..497e832 100644
--- a/keystone/meta/telegraf.yml
+++ b/keystone/meta/telegraf.yml
@@ -10,7 +10,7 @@
       region: "{{ server.region }}"
       username: "{{ server.admin_name }}"
       password: "{{ server.admin_password }}"
-      services: ["cinder", "glance", "keystone", "keystonev3", "neutron", "nova", "nova_instances"]
+      services: ["cinder", "glance", "ironic", "keystone", "keystonev3", "neutron", "nova", "nova_instances"]
       identity_endpoint: "{{ server.bind.private_protocol }}://{{ server.bind.private_address|replace('0.0.0.0', '127.0.0.1') }}:{{ server.bind.private_port }}/"
       monitor_agents: "true"
     openstack_api: