Add a free field to kafka-connect configs UI / support all configurations of connectors

[raphaelauv]

My use case is :

I have some specific value.converter.*** or key.converter.*** configurations

• Its not possible to add a non referenced config to the connector from the UI
• configs UI do not show custom config of the current connector, so my previous configuration do not show up

this "free_fields" could be key:value map so the user can precise value of each custom key.

[tchiotludo]

Seems to be a good solution I think, there is some edge case for connect configurations (specially custom one). PR are welcome :smile:

[philipp94831]

Hi, probably related to this issue: We also use these converter specific configurations. If we now change, e.g., max.tasks, using the AKHQ UI, the now updated connector does not include the converter specific configurations anymore. Should I open a new issue for that?

[tchiotludo]

I think it's the same issue

[raphaelauv]

Yes, I renamed the issue to explicit the support of all current configuration fields of the connector