added existingCliam for wordpress chart

charts/wordpress/latest/questions.yml

@@ -129,6 +129,11 @@ questions:
     description: "If undefined or null, uses the default StorageClass. Default to null"
     type: storageclass
     label: Default StorageClass for MariaDB
+  - variable: mariadb.master.persistence.existingClaim
+    default: ""
+    description: "If not empty, uses the specified existing PVC instead of creating new one"
+    type: string
+    label: Existing Persistent Volume Claim for MariaDB
 - variable: persistence.enabled
   default: false
   description: "Enable persistent volume for WordPress"