Support configuration of custom fluentd inputs

It is now possible to configure custom inputs for fluentd by placing files in
etc/kayobe/kolla/config/fluentd/input/ in the kayobe configuration.

Change-Id: I284e6cff0aa7ddd779530a6de2ea9f8dcdce6450
Story: 2003968
Task: 26898

ansible/roles/kolla-openstack/molecule/default/tests/test_default.py

@@ -28,6 +28,7 @@ testinfra_hosts = testinfra.utils.ansible_runner.AnsibleRunner(
 @pytest.mark.parametrize(
     'path',
     ['fluentd/filter',
+     'fluentd/input',
      'fluentd/output',
      'keystone'])
 def test_service_config_directory(host, path):

ansible/roles/kolla-openstack/molecule/enable-everything/tests/test_default.py

@@ -31,6 +31,7 @@ testinfra_hosts = testinfra.utils.ansible_runner.AnsibleRunner(
      'cinder',
      'designate',
      'fluentd/filter',
+     'fluentd/input',
      'fluentd/output',
      'glance',
      'grafana',

ansible/roles/kolla-openstack/vars/main.yml

@@ -34,6 +34,11 @@ kolla_openstack_custom_config:
     dest: "{{ kolla_node_custom_config_path }}/fluentd/filter"
     patterns: "*.conf"
     enabled: true
+  # Fluentd inputs.
+  - src: "{{ kolla_extra_config_path }}//fluentd/input"
+    dest: "{{ kolla_node_custom_config_path }}/fluentd/input"
+    patterns: "*.conf"
+    enabled: true
   # Fluentd outputs.
   - src: "{{ kolla_extra_config_path }}/fluentd/output"
     dest: "{{ kolla_node_custom_config_path }}/fluentd/output"

doc/source/configuration/kolla-ansible.rst

@@ -151,6 +151,7 @@ which files are supported.
    ``glance.conf``                 Glance configuration.
    ``glance/*``                    Extended glance configuration.
    ``fluentd/filter``              Fluentd filter configuration.
+   ``fluentd/input``               Fluentd input configuration.
    ``fluentd/output``              Fluentd output configuration.
    ``heat.conf``                   Heat configuration.
    ``heat/*``                      Extended heat configuration.

releasenotes/notes/fluentd-custom-inputs-1b911bd229e8a9e4.yaml

@@ -0,0 +1,4 @@
+---
+features:
+  - |
+    Supports fluentd custom input configuration