fluent
Add add_tag_prefix parameter to out_forward (like in_forward has)
Is your feature request related to a problem? Please describe.
When using out_forward to send logs to multiple different destinations, there's no way to simply add a tag prefix for a specific destination. This is problematic when the remote FluentD is not under your control, so you can't use add_tag_prefix on their in_forward.
Describe the solution you'd like
Could you please implement the add_tag_prefix parameter to out_forward, similar to what already exists in in_forward. This would be a simple, performant solution that keeps the FluentD configuration clean and straightforward.
Describe alternatives you've considered
rewrite_tag_filter - I tried using this plugin but encountered issues and couldn't get it to work properly (don't remember exactly, but probably because events were re-routed through the entire pipeline). I think it also has performance overhead.
Additional context
No response
Isn't the pattern of using the out_copy and out_forward plugins sufficient in this use case?
