Cross domian issue with Restconf API explorer (/apidoc/apis/) - need to add CORS header to server

There is Cross-domain issue when querying Restconf API explorer (https://wiki.opendaylight.org/view/OpenDaylight_Controller:MD-SAL:Restconf_API_Explorer wiki, https://git.opendaylight.org/gerrit/#/c/6574/ gerrit) from javascript.

No 'Access-Control-Allow-Origin' header is present on the requested resource.

From what it seems CORS headers need to be set on server. We would like to have access to apidoc/apis/ API from javascript to dynamically discover APIs for each module, but we can't continue until this issue is fixed.

p.s.: when calling /restconf/modules/ there is no such issue