WIP: Log params

[jgroom33]

  my_request:
    url: foo.com
    method: GET
    log_request: true

This would result in the request object and resolved uri being logged. This would be helpful to have a copy of the json and to show the URI with environment vars and values populated.

It might be good to create a log object as:

  my_request:
    url: foo.com
    method: GET
    log:
      output: true
      file: true
      request: true

[jgroom33]

https://github.com/jgroom33/strest/tree/feature/log_to_file