Create Redis Prospector Configuration

[ruflin]

In #4180 the redis prospector type was added. The documentation for the redis prospector type requires a change in the doc structure as it has completely different config options then the other prospector types.

• Create docs structure
• Add docs for redis prospector
• Add fields.yml

[dedemorton]

@ruflin I've opened an issue to discuss restructuring the Config section. There are other problems with that section that need to be resolved besides adding more prospector types: #4422

[tsg]

I'm working on making a redis module based on the redis prospector. It might be that we don't really need to document the redis prospector all that much, and just ask people to use the module. Does that make sense?

[ruflin]

@tsg I think we will still need to document the basic config options somewhere as they are accessible through the config in the module.

I'm trying to think of a use case where people would not use the module, but couldn't find one so having most of the docs in the module SGTM.

[ruflin]

@dedemorton Proposal looks good to me. I like that it also covers "multiple prospectors". There is probably some info also on the "prospector" overview page that explains what a prospector is.

[dedemorton]

On a related note, I'm also adding info about the udp prospector. I agree that we need to have a better overview of prospectors and what's possible.

[dedemorton]

@ruflin Can we close this? Sorry it took me so long to get around to refactoring the prospector/input docs. :-(