Incorrect / missing templating for kibana username

[JonnyBDev]

With this commit from 5 days ago you can now set a different user instead of the "kibanaserver".

After setting it to a different username, the dashboard isn't starting anymore:

{"type":"log","@timestamp":"2025-08-16T09:39:31Z","tags":["error","opensearch","data"],"pid":55,"message":"[ResponseError]: Response Error"}

If I set it back to kibanaserver it's working again. Problem: hardcoded string somewhere.

The commit unfortunately did not cover all templating for the user. In the _helper.tpl are several occasions where the hardcoded kibanaserver is still used resulting in the above mentioned problem.

• https://github.com/morgoved/wazuh-helm/blob/main/charts/wazuh/templates/_helpers.tpl#L1410
• https://github.com/morgoved/wazuh-helm/blob/main/charts/wazuh/templates/_helpers.tpl#L1523
• https://github.com/morgoved/wazuh-helm/blob/main/charts/wazuh/templates/_helpers.tpl#L1546

I think this should be replaced with "{{ .Values.indexer.cred.username }}". Pinging @TrueDru for the commit.