Document pre-canned parameters for runner types about st2docs

[jasoanderson]

I want to reiterate this. I ran into this same issue last Friday, the documentation wasn't clear what was considered base parameters. I was working creating an action of type remote command line. I kept getting a mapping issue, because I was trying to specify that the host parameter was needed. I was able to get help through slack on this issue, but after rereading the documentation, I believe the documentation needs to be made more clear on what parameters are always there, and what are additional ones we can add. Maybe even with an example.

[LindsayHill]

Can you create a PR with the sort of example you want to see in the docs?

This page: https://docs.stackstorm.com/reference/runners.html should have all the parameters for runners. Are there some missing from there, or do you want this information included/linked from elsewhere in the docs?

Which section of the docs do you want to see updated?

[blag]

The timeout parameter is not listed on the Actions page.

There is a link to the Runners section of the Reference page, but it's buried in the middle of a lot of text.

At the very least we should make sure to list all runner parameters in the action runners section of the actions page.