Retry Based on Response Code about heimdall

[GarryGaller]

A good idea. I just wanted to ask the package developer to do this.
Add a statusForRetry field of type [] int to the Client structure,
and replace the if response.StatusCode >= http.StatusInternalServerError condition by checking whether http code is included in statusForRetry. Better still, make a map where the key is the http status, and the value is a structure with the timeout, retryCount, and callback function fields.

[arieltorti]

Bumping, any updates on this ?

There's an implementation similar to what @GarryGaller proposed here: #105