fix: support retryable http clients

Closes coop-cloud/organising#257.

pkg/web/web.go

@@ -3,7 +3,6 @@ package web
 
 import (
 	"encoding/json"
-	"net/http"
 	"time"
 )
 
@@ -13,7 +12,7 @@ const Timeout = 10 * time.Second
 
 // ReadJSON reads JSON and parses it into your chosen interface pointer
 func ReadJSON(url string, target interface{}) error {
-	httpClient := &http.Client{Timeout: Timeout}
+	httpClient := NewHTTPRetryClient()
 	res, err := httpClient.Get(url)
 	if err != nil {
 		return err