provide a universal collectd template

The default config for collectd is very different between OS distro.
For example, in ubuntu, collectd read config from "/etc/collect/collect.conf.d".
But in centos, collectd read config from "/etc/collect.d"
We need to provide a universal collectd template
to make it convenient for different distros.

Change-Id: Ib82fcbb923cb32dbafce04e1e639a400d59a4365
Closes-Bug: #1652246

ansible/roles/collectd/tasks/config.yml

@@ -21,3 +21,13 @@
     dest: "{{ node_config_directory }}/{{ item }}/config.json"
   with_items:
     - "collectd"
+
+- name: Copying over collectd.conf for services
+  template:
+    src: "{{ item }}"
+    dest: "{{ node_config_directory }}/collectd/collectd.conf"
+  with_first_found:
+    - "{{ node_custom_config }}/collectd/{{ inventory_hostname }}/collectd.conf"
+    - "{{ node_custom_config }}/collectd/collectd.conf"
+    - "{{ node_custom_config }}/collectd.conf"
+    - "collectd.conf.j2"

ansible/roles/collectd/tasks/start.yml

@@ -8,7 +8,6 @@
     privileged: True
     volumes:
       - "{{ node_config_directory }}/collectd/:{{ container_config_directory }}/:ro"
-      - "{{node_config_directory }}/collectd/collectd.conf.d/:/etc/collectd/collectd.conf.d/"
       - "/etc/localtime:/etc/localtime:ro"
       - "kolla_logs:/var/log/kolla/"
       - "/sys/:/sys/:ro"

ansible/roles/collectd/templates/collectd.conf.j2

@@ -0,0 +1,6 @@
+FQDNLookup false
+LoadPlugin syslog
+LoadPlugin cpu
+LoadPlugin interface
+LoadPlugin load
+LoadPlugin memory

ansible/roles/collectd/templates/collectd.json.j2

@@ -1,3 +1,20 @@
+{% set collectd_config = '/etc/collectd/collectd.conf' if kolla_base_distro in ['ubuntu', 'debian'] else '/etc/collectd.conf' %}
+
 {
-    "command": "/usr/sbin/collectd -f"
+    "command": "/usr/sbin/collectd -f -C {{ collectd_config }}",
+    "config_files": [
+        {
+            "source": "{{ container_config_directory }}/collectd.conf",
+            "dest": "{{ collectd_config }}",
+            "owner": "collectd",
+            "perm": "0600"
+        }
+    ],
+    "permissions": [
+        {
+            "path": "/var/log/kolla/collectd",
+            "owner": "collectd:collectd",
+            "recurse": true
+        }
+    ]
 }