Update log format stream for mariadb

It is usefule for troubleshooting.

Change-Id: Ief9fb0c700e64717fe3a7f62b7b7c22ec1f84179

mariadb/Chart.yaml

@@ -15,7 +15,7 @@ apiVersion: v1
 appVersion: v10.2.31
 description: OpenStack-Helm MariaDB
 name: mariadb
-version: 0.2.5
+version: 0.2.6
 home: https://mariadb.com/kb/en/
 icon: http://badges.mariadb.org/mariadb-badge-180x60.png
 sources:

mariadb/values.yaml

@@ -307,6 +307,7 @@ conf:
   ingress: null
   ingress_conf:
     worker-processes: "auto"
+    log-format-stream: "\"$remote_addr [$time_local] $protocol $status $bytes_received $bytes_sent $upstream_addr $upstream_connect_time $upstream_first_byte_time $upstream_session_time $session_time\""
   backup:
     enabled: false
     base_path: /var/backup

releasenotes/notes/mariadb.yaml

@@ -21,4 +21,5 @@ mariadb:
   - 0.2.3 Remove panko residue
   - 0.2.4 Use full image ref for docker official images
   - 0.2.5 Added helm hook for post-install and post-upgrade in prometheus exporter job.
+  - 0.2.6 Update log format stream for mariadb
 ...