Add parameter to not log Response during executing REST requests

REST requests (ex. `sendPOST`) always output response , through `execute` method: `$this->debugSection("Response", $printedResponse);`

However our tests do a lot of requests, and in return get whole body of web page, which pollutes log.

This is why I would like to add parameter, which suppresses printing whole response. If such contribution would be welcomed, I can provide pull request.