Fluentd: Set cinder-backup log path

Cinder-backup service does not provide the path of the log
so fluentd does not read it.

This patch makes fluentd to know where the log are for the cinder-backup service

Change-Id: I6aae8f2614fbca425595e56e565216c70b30b4d6
Closes-Bug: #1781019

docker/services/cinder-backup.yaml

@@ -52,6 +52,11 @@ parameters:
   CephClientUserName:
     default: openstack
     type: string
+  DockerCinderBackupLoggingSource:
+    type: json
+    default:
+      tag: openstack.cinder.backup
+      path: /var/log/containers/cinder/cinder-backup.log
 
 resources:
 
@@ -82,7 +87,14 @@ outputs:
       config_settings: {get_attr: [CinderBase, role_data, config_settings]}
       logging_source: {get_attr: [CinderBase, role_data, logging_source]}
       logging_groups: {get_attr: [CinderBase, role_data, logging_groups]}
-      service_config_settings: {get_attr: [CinderBase, role_data, service_config_settings]}
+      service_config_settings:
+        map_merge:
+          - get_attr: [CinderBase, role_data, service_config_settings]
+          - fluentd:
+              tripleo_fluentd_groups_cinder_backup:
+                - cinder
+              tripleo_fluentd_sources_cinder_backup:
+                - {get_param: DockerCinderBackupLoggingSource}
       # BEGIN DOCKER SETTINGS
       puppet_config:
         config_volume: cinder

puppet/services/cinder-backup.yaml

@@ -63,6 +63,11 @@ parameters:
   MonitoringSubscriptionCinderBackup:
     default: 'overcloud-cinder-backup'
     type: string
+  CinderBackupLoggingSource:
+    type: json
+    default:
+      tag: openstack.cinder.backup
+      path: /var/log/cinder/cinder-backup.log
 
 resources:
 
@@ -96,6 +101,12 @@ outputs:
             cinder::backup::swift::backup_swift_container: volumebackups
             cinder::backup::nfs::backup_share: {get_param: CinderBackupNfsShare}
             cinder::backup::nfs::backup_mount_options: {get_param: CinderBackupNfsMountOptions}
+      service_config_settings:
+        fluentd:
+          tripleo_fluentd_groups_cinder_backup:
+            - cinder
+          tripleo_fluentd_sources_cinder_backup:
+            - {get_param: CinderBackupLoggingSource}
       step_config:
         str_replace:
           template: "include ::tripleo::profile::base::cinder::backup::DRIVER"