refactor, trying to use eso for this db

apps/kimai/values.yaml

@@ -15,19 +15,26 @@ persistence:
 database:
   type: mariadb
 
-existingSecret: kimai-secrets
+existingSecret: kimai-db-secrets
 
-mariadb:
+externalDatabase:
+  host: mariadb
+  existingSecret: kimai-db-secret
+  valueFrom:
+    name: kimai-db-secret
+    key: password
+
+#mariadb:
   #enabled: true
-  auth:
-    existingSecret: kimai-db-secret
-    username: kimai
-    database: kimai
-    password:
-    valueFrom:
-      secretKeyRef:
-        name: kimai-db-secret
-        key: password
+#  auth:
+#    existingSecret: kimai-db-secret
+#    username: kimai
+#    database: kimai
+#    password:
+#    valueFrom:
+#      secretKeyRef:
+#        name: kimai-db-secret
+#        key: password
   #primary:
   #  persistence:
   #    size: 4Gi