Allow user to specify protocol (http instead of https) with --issue-site

In a dreditor commit https://github.com/dreditor/dreditor/commit/f25b214920f084d28ea67328963b...

// @todo fix this once JSON data can be extracted again.

+++ b/iq.drush.inc
@@ -1337,6 +1337,10 @@ function drush_iq_download_info($issue_info_id) {
+      drush_log("No json data received from d.o.", "warning");

This text could probably better link to the correct issue like https://drupal.org/node/1969466 aka #1969466: Fix GET /node/1 with page caching

@helmo and @clemens.tolboom are now testing on

$ drush --strict=0 --debug --issue-site="http://drupal:drupal@project-drupal.redesign.devdrupal.org" patch 2125253

We needed to apply Entity #1330086: wrapper throws exceptions for properties that are declared in the info.

Attached json file for analysis of the new structure.

1. +++ b/iq.drush.inc
   @@ -1327,16 +1327,23 @@ function drush_iq_issue_number($issue_spec) {
   +  $url = "$issue_site/node/$number.json";
   

   This needs documentation as we MUST request for node/1.json as _drush_download_file has no options for adding a header field like "Accept: application/json"

2. +++ b/iq.drush.inc
   @@ -1327,16 +1327,23 @@ function drush_iq_issue_number($issue_spec) {
   +    drush_log(print_r($data, true));
   

   No need to log this.

3. +++ b/iq.drush.inc
   @@ -1327,16 +1327,23 @@ function drush_iq_issue_number($issue_spec) {
   +    drush_log(print_r($issue_info, true));
   

   No need to log this.

4. +++ b/iq.drush.inc
   @@ -1327,16 +1327,23 @@ function drush_iq_issue_number($issue_spec) {
   +      drush_log("No json data received from d.o.", "warning");
   

   This should be a fatal.

Attached patch fixes some problems encountered while testing:
- test site runs http instead of hard coded https
- My guess is we need unit tests for the received json data so I split <?php function drush_iq_download_info() by adding <?php function _drush_iq_prepare_json()?

See #2127995: Make testsuite run smoother

Thanks :)