1) Go's default http package
2) Jitter/Backoff ----> https://aws.amazon.com/blogs/architecture/exponential-backoff-and-jitter/
3) Hashicorp library https://github.com/hashicorp/go-retryablehttp

1) Test cases for hystrix, basic testing for hystrix client
2) More test cases for http client
3) Add Prometheus metric support on the client

1) HTTP Client
	client := NewHttpClient(10*time.Millisecond, DefaultTransport())
	backoffStratergy := NewExponentialBackoff(2*time.Millisecond, 10*time.Millisecond, 2.0)
	client.SetRetries(3)
	client.SetBackoff(backoffStratergy)


	resp, err := client.Get("/foo/bar")
	if err!=nil{
		resp.Body.Close()
	}

2) Hystrix Client (TODO)