Fluentd "progname" field not always generated

'progname' is actually only fullfilled for Openstack services logs.
They are missing for MariaDB and RabbitMQ logs.
When using Kibana, "progname" field appears empty, hence it's difficult
to known where logs comes from.

Change-Id: Ifcbfd981a34a8d64ea69d37934c7f0fae10a90b5
Closes-Bug: #1713412

ansible/roles/common/templates/conf/filter/00-record_transformer.conf.j2

@@ -6,3 +6,10 @@
         programname ${tag_parts[5]}
     </record>
 </filter>
+
+<filter infra.*>
+    @type record_transformer
+    <record>
+        programname ${tag_parts[1]}
+    </record>
+</filter>

ansible/roles/common/templates/conf/input/02-mariadb.conf.j2

@@ -3,7 +3,7 @@
   @type tail
   path /var/log/kolla/mariadb/mariadb.log
   pos_file /var/run/{{ fluentd_dir }}/mariadb.pos
-  tag mariadb.*
+  tag infra.mariadb
   format multiline
   format_firstline /^\d{6}/
   format1 /^(?<time>\d{6} \d{1,2}:\d{1,2}:\d{1,2}) \[(?<severity_label>\S+)\] (?<Payload>.*)/

ansible/roles/common/templates/conf/input/03-rabbitmq.conf.j2

@@ -3,7 +3,7 @@
   @type tail
   path /var/log/kolla/rabbitmq/rabbit.log
   pos_file /var/run/{{ fluentd_dir }}/rabbit.pos
-  tag rabbit.*
+  tag infra.rabbitmq
   format multiline
   format_firstline /^\s*$/
   format1 /^=(?<log_level>\w+) REPORT==== (?<Times>[^ ]+) ===\n/