wordpress: Added mariadb connection test to wordpress chart. (#1156)

* Added mariadb connection test to wordpress chart.

* bump chart version

stable/wordpress/Chart.yaml

@@ -1,5 +1,5 @@
 name: wordpress
-version: 0.6.6
+version: 0.6.7
 appVersion: 4.8
 description: Web publishing platform for building blogs and websites.
 icon: https://bitnami.com/assets/stacks/wordpress/img/wordpress-stack-220x234.png

stable/wordpress/templates/tests/test-mariadb-connection.yaml

@@ -0,0 +1,27 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: "{{ .Release.Name }}-credentials-test"
+  annotations:
+    "helm.sh/hook": test-success
+spec:
+  containers:
+  - name: {{ .Release.Name }}-credentials-test
+    image: {{ .Values.image }}
+    env:
+      - name: MARIADB_HOST
+        value: {{ template "mariadb.fullname" . }}
+      - name: MARIADB_PORT
+        value: "3306"
+      - name: WORDPRESS_DATABASE_NAME
+        value: {{ default "" .Values.mariadb.mariadbDatabase | quote }}
+      - name: WORDPRESS_DATABASE_USER
+        value: {{ default "" .Values.mariadb.mariadbUser | quote }}
+      - name: WORDPRESS_DATABASE_PASSWORD
+        valueFrom:
+          secretKeyRef:
+            name: {{ template "mariadb.fullname" . }}
+            key: mariadb-password
+    command: ["sh", "-c", "mysql --host=$MARIADB_HOST --port=$MARIADB_PORT --user=$WORDPRESS_DATABASE_USER --password=$WORDPRESS_DATABASE_PASSWORD"]
+  restartPolicy: Never
+