Remove headers from Request of http.parseJSON returned error

[brandon-welsch]

GRR-94

This pollutes the log, does not give more information for debug, and leaks the JWT token 👎🏻

Example of log:

fail to parse JSON of subresource response: fail to parse JSON of request &{GET https://api.scalingo.com/v1/apps/test? HTTP/1.1 1 1 map[Accept:[application/json] Authorization:[Bearer ...] Content-Type:[application/json] User-Agent:[Scalingo Go Client]] <nil> <nil> 0 [] false api.scalingo.com map[] map[] <nil> map[] <nil> <nil> <nil> 0xc0001f3200}, json: cannot unmarshal string into Go value of type scalingo.App

[Soulou]

I disagree with this patch, we want some metadata like the URL path, but not the headers

[Soulou]

The current state would display:

fail to parse JSON of subresource response: fail to parse JSON of request &{GET https://api.scalingo.com/v1/apps/test? HTTP/1.1 1 1 map[Accept:[application/json] Authorization:[Bearer ...] Content-Type:[application/json] User-Agent:[Scalingo Go Client]] <nil> <nil> 0 [] false api.scalingo.com map[] map[] <nil> map[] <nil> <nil> <nil> 0xc0001f3200}, json: cannot unmarshal string into Go value of type scalingo.App

Could you change to display

fail to parse JSON of subresource response: fail to parse JSON of request GET https://api.scalingo.com/v1/apps/test?, json: cannot unmarshal string into Go value of type scalingo.App

?