Enable CORS for Kie Server in BPM Suite 6

Issue

• Is this possible to enable CORS in Kie Server?
• We followed the steps from article How to enable Cross-Origin Resource Sharing (CORS) on JBoss EAP 6 but we are still not able to have CORS working, it fails with errors in the browser such as XMLHttpRequest cannot load http://localhost:8080/kie-server/services/rest/server/containers/instances/TestContainer. Request header field X-KIE-ContentType is not allowed by Access-Control-Allow-Headers. even when we allow this HTTP header