Adding tls_client_private_key_passphrase in fluent.conf in forward from logforward

Customer is looking for a way to configure passphrase while sending logs to external fluentd which is using a private key with passphrase.

Requirement:-

Like we add tls.key, tls.crt, ca-bundle.crt we should also have a parameter to add passphrase into the same secret and send it to fluentd forward configuration.

Please find reference of below parameter from fluentd documetation

https://docs.fluentd.org/output/forward#tls_client_private_key_passphrase