HTTP redirect loop & max redirect detection is broken

[NiteshKant]

As part of the refactoring of HttpRedirect to use an Rx Operator (issue #113) the feature of detecting redirect loops and infinite redirects was broken.
The issue is that every redirect request is creating a new RedirectOperator and hence loosing the redirect state via RedirectionContext.

The fix is to disable further HTTP redirects by the HTTP client for redirected requests as the RedirectOperator takes care of the redirects internally.