enhancement: additional configuration for kibana.yml

[psteinmetzcid]

For my perspective it is a good enhancement to add the possibility to add additional parameters to the kibana.yml.

e.g. in our case the following parameters needed.
telemetry.enabled: false
monitoring.ui.ccs.enabled: false

I think a good approach are a generic way.
For example have a variable like this and loop over it in the jinja template file

kibana.additional.parameter:
  telemetry.enabled: false
  monitoring.ui.ccs.enabled: false
  other_parameters: value

[widhalmt]

Thanks for the input! Yes, that's a great idea. And it's well fitted even when we integrate more and more options as variables. I guess we'll take a global approach and integrate it for all the tools we're managing.